MCAT Physics
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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| show | kinematics
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| show | acceleration
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| show | velocity
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| a continuous change in the position of a body relative to a reference point | show 🗑
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| show | speed
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| numerical description of how far apart objects are at any given moment in time | show 🗑
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| the vector that specifies the position of a point or a particle in reference to an origin or to a previous position | show 🗑
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| show | scalar
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| a physical quantity characterized by both magnitude and direction | show 🗑
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| motion in which an object moves with constant speed along a circular path | show 🗑
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| show | free fall
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| a particular perspective from which the universe is observed, providing a set of axes from which an observer can measure the position and motion of all points in a system | show 🗑
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| the path a moving object follows through space | show 🗑
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| show | position vector
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| show | international system of units
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| the nominal acceleration due to gravity at the Earth's surface at sea level | show 🗑
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| show | ballistics
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| rate of change of the acceleration | show 🗑
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| show | snap
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| show | force
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| a fundamental concept in physics, roughly corresponding to the intuitive idea of how much matter there is in an object | show 🗑
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| show | dynamics
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| show | weight
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| show | centripetal force
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| the force that opposes the relative motion or tendency toward such motion of two surfaces in contact | show 🗑
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| a dimensionless quantity used to calculate the force of friction (static or kinetic) | show 🗑
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| the component, perpendicular to the surface of contact, of the contact force exerted by the surface | show 🗑
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| a force between two objects that are touching each other | show 🗑
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| show | Newton
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| show | inertia
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| a vector produced when two or more forces act upon a single object. also called a resultant | show 🗑
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| show | Newton's third law
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| show | fundamental interaction
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| when two solid surfaces slide against each other | show 🗑
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| Newton's first and second laws of motion are valid, ie. neither is rotating nor accelerated | show 🗑
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| show | tension
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| show | rolling resistance
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| a unit of force specified in the centimeter-gram-second (cgs) system of units | show 🗑
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| an apparent force that acts on all masses in a non-inertial frame of reference arising from the acceleration of the non-inertial frame itself | show 🗑
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| defined as a work one system does (or can do) on another system | show 🗑
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| the extra energy which it possesses due to its motion, defined as the work needed to accelerate the body from rest to its current speed | show 🗑
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| show | potential energy
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| show | mechanical work
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| states that the total amount of energy in an isolated system remains constant, although it may change forms | show 🗑
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| show | power
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| the SI unit of energy | show 🗑
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| show | watt
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| show | simple machine
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| a flat surface whose endpoints are at different heights | show 🗑
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| a rigid object that is used with an appropriate fulcrum or pivot point to multiply the mechanical force that can be applied to another object | show 🗑
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| a wheel with a groove along its edge for holding a rope or cable or belt | show 🗑
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| the factor by which a mechanism multiplies the force put into it | show 🗑
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| a unit of energy often used also in theoretical physics as a unit of mass. It is the amount of kinetic energy gained by a single unbound electron when it passes through an electrostatic potential difference of one volt, in vacuo | show 🗑
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| show | conservative force
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| the energy which causes or is released by the physical distortion of a solid or a fluid | show 🗑
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| show | gravitational binding energy
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| a unit of measurement for energy equal to the amount of heat required to raise a gram of water one degree celsius. In most fields, it has been replaced by the joule | show 🗑
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| an English unit of work or energy. It is the amount of energy expended when a force of one pound acts through a distance of 1 foot along the direction of the force | show 🗑
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| show | British thermal unit
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| show | mechanical efficiency
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| show | erg
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| the product in classical mechanics of the mass and velocity of an object | show 🗑
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| a specific point at which, for many purposes, the system's mass behaves as if it were concentrated | show 🗑
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| the action of bodies striking or coming together | show 🗑
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| show | elastic collision
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| a collision in which some of the kinetic energy of the colliding bodies is converted into internal energy in at least one body such that kinetic energy is not conserved | show 🗑
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| show | impulse
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| show | conservation law
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| show | recoil
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| a fractional value representing the ratio of velocities before and after an impact | show 🗑
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| show | specific impulse
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| show | Newton's cradle
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| show | torque
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| show | rotation
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| the measure of the extent to which the object will continue to rotate about that point unless acted upon by an external torque | show 🗑
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| specifies the angular speed at which an object is rotating along with the direction in which it is rotating | show 🗑
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| the rotational analog of mass. That is, it is the inertia of a rigid rotating body with respect to its rotation | show 🗑
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| show | angular displacement
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| the kinetic energy due to the rotation of an object; sometimes called angular kinetic energy | show 🗑
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| a scalar measure of rotation rate. It is the magnitude of the angular velocity | show 🗑
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| show | angular acceleration
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| when the sum of the forces and torques on each particle of the system is zero | show 🗑
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| a unit of frequency: the number of full rotations completed in one minute around a fixed axis | show 🗑
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| the branch of physics concerned with the analysis of loads, ie. forces and torques, on physical systems in static equilibrium | show 🗑
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| show | rigid body
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| a device based on the principle of conservation of angular momentum. The essence of the device is a spinning wheel on an axle | show 🗑
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| show | radian
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| the SI unit of angular velocity | show 🗑
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| show | couple
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| show | precession
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| a quantity that transforms like a vector under a proper rotation, but gains an additional sign flip under an improper rotation; axial vector | show 🗑
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| show | flywheel
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| a mechanical model that is used to explain rotating systems. Three angles are required to orient such an object in space | show 🗑
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| show | simple harmonic motion
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| an object that is attached to a pivot point so it can swing freely | show 🗑
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| a nonnegative scalar measure of a wave's magnitude of oscillation, the magnitude of the maximum disturbance in the medium during one wave cycle | show 🗑
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| show | frequency
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| a flexible elastic object used to store mechanical energy usually made out of hardened steel | show 🗑
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| the weight on the end of a pendulum | show 🗑
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| the variation of some measure about a central value (often a point of equilibrium) or between two or more different states | show 🗑
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| show | harmonic oscillator
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| the SI unit of frequency; its base unit is the cycle per second | show 🗑
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| show | damping
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| a function that repeats its values after some definite period has been added to its independent variable | show 🗑
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| the quality of occurring at regular intervals or periods in time or space | show 🗑
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| the fraction of a cycle corresponding to an offset in the displacement from a specified reference point at time t = 0 | show 🗑
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| refers to mechanical oscillations about an equilibrium point. The oscillations may be periodic such as the motion of a pendulum or random such as the movement of a tire on a gravel road | show 🗑
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| the tendency of a system to oscillate at maximum amplitude at a certain frequency | show 🗑
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| show | small-angle approximation
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| having an equal time difference or occurring simultaneously | show 🗑
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| a system of two simple pendulums on a common mounting which move in anti-phase | show 🗑
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| show | gravitation
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| the cyclic rising and falling of Earth's ocean surface caused by the tidal forces of the Moon and the Sun acting on the oceans | show 🗑
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| show | gravitational field
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| the path that an object makes around another object while under the influence of a centripetal force such as gravity | show 🗑
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| show | escape velocity
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| show | Cavendish experiment
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| the time it takes a planet (or another object) to make one full orbit | show 🗑
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| show | geosynchronous satellite
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| an orbit around the Earth with an orbital period matching the Earth's sidereal rotation period | show 🗑
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| show | geostationary orbit
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| show | circular orbit
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| show | ellipse
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| a unit of length nearly equal to the semi-major axis of Earth's orbit around the Sun | show 🗑
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| the point at which an object in orbit around the Earth makes its closest approach to the Earth | show 🗑
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| a term used in astronomy to describe alterations to an object's orbit caused by gravitational interactions with other bodies | show 🗑
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| show | apsis
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| the theory that the sun is at the center of the Universe and/or the Solar System | show 🗑
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| generally defined as an orbit within the locus extending from the Earth's surface up to an altitude of 2,000 km | show 🗑
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| the sum of its potential energy and kinetic energy per unit mass | show 🗑
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| show | standard gravitational parameter
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Created by:
kameyer85
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