Need to study for Physics? Here are some questions to help you out!!!
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| Chapter 1 | show 🗑
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| When is an object in motion? | show 🗑
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| What is a reference point? | show 🗑
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| What is the International System of Units? | show 🗑
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| show | The main unit of length in SI is the meter, which is a bit longer than a yard.
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| show | Speed's the distance an object travels in a certain amount of time.
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| How do you calculate speed? | show 🗑
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| When is an object at a constant speed? | show 🗑
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| How do you find an objects average speed? | show 🗑
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| When do you know the velocity of an object? | show 🗑
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| What a slope of a graph? | show 🗑
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| How do you calculate slope? | show 🗑
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| show | Acceleration is the rate at which velocity changes. Because velocity = speed in certain direction, acceleration refers to 1) increasing speed, 2) decreasing speed, or 3) changing direction
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| show | Acceleration = Final Velocity - Initial Velocity, divided by Time
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| What is a linear relationship? | show 🗑
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| show | If a line on a graph doesn't rise the same amount each time, then it has a nonlinear relationship.
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| show | Forces
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| show | A force is a push or pull.
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| What is a net force? | show 🗑
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| show | An unbalanced force is a force that will change an objects motion (cause it to start moving, stop moving, or change the objects motion)
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| show | Ballanced forces are equal forces acting on one object in opposite directions. Balanced forces will not change an objects motion.
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| What is inertia? | show 🗑
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| What is Newton's first law of motion? | show 🗑
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| What is mass? | show 🗑
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| show | Newton's second law of motion says that the net force on an object is equal to the product of its accelration and its mass. (Force = Mass x Acceleration)
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| What is friction? | show 🗑
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| show | The three types of friction are: 1) sliding friction, surfaces sliding on each other 2) rolling friction, objects that roll on each other and 3) fluid friction, objects that moves through a liquid or gas..
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| show | Gravity is the force that pulls objects together.
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| When is an object in its freefall? | show 🗑
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| show | A projectile is an object that is thrown.
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| What is air resistance? | show 🗑
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| When does an object reach its terminal velocity? | show 🗑
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| show | The force of gravity on a person or object at the surface of a planet.
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| show | Weight = Mass x Acceleration due to gravity (9.8 m/s squared)
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| show | Newton's third law of motion says if one object exerrts a force on an object, the second object exerts a force of equal magnitude in the opposite direction of the first object.
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| show | Momentum is the quantity of motion. Momentum is the product of an objects mass and its velocity. Momentum = Mass x Velocity. The unit of measurement for momentum is kilogram-meters per second (kg x m/s)
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| What does the law of conservation of momentum say? | show 🗑
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| That is the end of Chapter 2 Take a break....there is more to come!!! | show 🗑
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| Chapter 3 | show 🗑
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| What is pressure? | show 🗑
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| What is the unit of measurement for pressure? | show 🗑
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| What is a fluid? | show 🗑
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| show | Pascals principle says that when a force is applied to a convined fluid, the pressure is applied equally to all parts of the fluid.
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| What do hydraulic systems do? | show 🗑
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| What is a buoyant force? | show 🗑
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| show | Archimedes' principle says that the buoyant force on an object is equal to the weight of the fluid displaced by the object.
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| What is density? | show 🗑
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| show | Sink
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| show | Float
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| show | Suspend in the water
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| show | Bernoulli's principle says that pressure exerted by a moving stream of fluid is less than the pressuer of the surrounding fluid.
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| Chapter 4 | show 🗑
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| What is work? | show 🗑
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| show | 1) make the object move some distance, 2) have the force you exert be in the same direction of the objects motion.
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| show | Work = Force x Distance. The unit of measurement for work is a joule, or J, which is a Newton meter, Nm
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| How does a machine make work easier? | show 🗑
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| What is an input force? | show 🗑
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| show | An output force is the force exerted by the machine.
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| What is a machines mechanical advantage? | show 🗑
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| show | Mechanical advantage = Output force/Input force.
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| show | The efficiency of a machine compares the output work to the input work. It is expressed as a percent.
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| show | Efficiency = Output force/Input force x 100%
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| What is an actual mechanical advantage? | show 🗑
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| show | The ideal mechanical advantage of a machine is the mechanical advantage without friction. The more efficient a machine is, the closer the actual mechanical advantage is to the ideal mechanical advantage.
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| show | The six types of simple machines are: 1) the inclined plane, 2) the wedge, 3) the screw, 4) the lever, 5) the wheel and axle, 6) the pulley.
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| show | An inclined plane is a flat slanted surface. (ex. ramp.)
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| How do you find the ideal mechanical advantage of an inclined plane? | show 🗑
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| What is a wedge? | show 🗑
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| show | A screw can be thought of as an inclined plane wrapped around a cylinder. (ex. twisty slide)
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| What is a lever? | show 🗑
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| show | A fulcrum is the fixed point that a lever pivots around.
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| show | To find the ideal mechanical advantage of a lever, you divde the distance from the fulcrum to input force, by the distance from the fulcrum to the output force.
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| What is a wheel and axle? | show 🗑
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| How do you find the ideal mechanical advantage of a wheel and axle? | show 🗑
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| What is a pulley? | show 🗑
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| show | The ideal mechanical advantage of a pulley system is equal to the number of sections of the rope that support the object. (ex. flagpole).
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| What is a compound machine? | show 🗑
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| What are gears? | show 🗑
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| show | Tendons are the tissue which attach your muscles to your bones.
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| Chapter 5 | show 🗑
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| What is energy? | show 🗑
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| show | The two types of energy are: 1) kinetic energy, and 2) potential energy.
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| show | Kinetic energy is the energy of motion.
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| How do you calculate kinetic energy? | show 🗑
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| What is potential energy? | show 🗑
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| show | 1) Elastic potential energy, potential energy associated with objects that can be stretched or compressed., and 2) gravitational potential energy, energy that depends on height.
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| How do you calculate gravitational potential enrgy | show 🗑
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| show | The unit of measurement for energy is a joule, J
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| show | Gravitational potential energy = Mass x Gravitational acceleration (9.8 m/s) x Height.
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| show | 1) Mechanical Energy, 2) Thermal Energy, 3) Chemical Energy, 4) Electrical Energy, 5) Electromagnetic Energy, 6) Nuclear Energy.
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| show | The law of conservation of energy says that when one form of energy is converted to another, no energy is destroyed in the process.
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| What is power? | show 🗑
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| show | Power = Force x Distance divided by Time. The unit of measurement for power is 1 watt, which is equal to 1 Joule per second.
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Created by:
Tycheeman610
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