Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Physics Exam
| Question | Answer |
|---|---|
| What is the distance relation to two identical objects released one after the other | They will accelerate and get farther and farther apart |
| What is speed? | Total distance covered per unit time |
| What is velocity | Total distance covered per unit time in a particular direction |
| What is acceleration | Velocity divided by the time interval |
| What is Hang time | the amount of time is the amount of time between an object's launch and its landing |
| What is earth's acceleration of gravity? | 10 m/s^2 |
| What is constant accceleration? | When an object falls the velocity is constantly increasing |
| Units of speed? | units of distance divided by units of time. Meters per second |
| What is an objects acceleration if it has constant velocity? | ZER0 |
| What is a vector? | A quantity that has magnitude and direction |
| What is a scalar? | A quantity that jas only magnitude |
| How is velocity represented as a vector? | The arrow sows the direction of the motion, the length represents the speed |
| What is a projectile | An object traveling through the air |
| What is the relation between the horizontal and vertical components of velocity? | They are completely independent of eachother. |
| How does the vertical component of a projectile's velocity react to free fall? | It is constantly increasing |
| How does the horizontal component of a projectile's velocity react to free fall? | It never changes |
| What is the relationship between an object dropped from a height and an identical object thrown from the same height. | They hit the ground at the same time in the absence of air friction |
| At what point in its flight path is a projectile's velocity entirely horizontal? | At the top of it's flight path. |
| What angle will a ball travel the farthest? | 45 degrees |
| Will a ball ever go as far as physics predicts ideally? | No because of air friction |
| Where in a projectile's flight path does it have minimum speed? | At the tip top |
| How fast will a projectile return to earth after it was launched? | As fast as it was launched. |
| How much air resistance is there inside of a vacuum? | N0NE |
| How far does a projectile go at x degrees more than 45 compared to x degrees less than 45 | The same distance |
| How can you tell the resultant magnitude of horizontal and vertical vectors? | The hypotenuse is the resultant magnitude |
| What is a projectile in orbit called? | A satellite |
| What would happen if there were no air resistance and you threw a baseball 8 km/s? | It would orbit the earth |
| Neglecting air resistance, what component of velocity is constant? | The horizontal component |
| Who first stated that the earth revolves around the sun? | Copernicus |
| What did Galileo's ball and ramp experiment find? | He found that neglecting friction of any kind that a ball rolling down one ramp would roll almost just as far up another ramp of any angle |
| What does the law of inertia state? | An object in motion will continue in a straight line path with constant velocity unless acted on by an outside force. An object will stay at rest if it's at rest unless acted on by an outside force. |
| Since the planets orbit the sun what does that make them? | Satellits, space projectiles |
| What is mass | A measure of how much inertia something has |
| What is the difference between weight and mass? | Weight is gravity acting on mass, mass is amount of matter and its inertia |
| How much does one kg weigh on earth> | It weighs 9.8 newtons |
| How much acceleration does an object following a straight line path at constant speed have? | ZER0 acceleration |
| What is friction | Little imperfections in the ground that creates a force acting against motion |
| Rank gravity on the EARTH, the MOON, and JUPITER from greatest to least | JUPITER, EARTH, THE MOON |
| What is equilibrium | when net force on an object is equal to 0 |
| How can the weight of a person be represented? | A vector force pointing straight down no matter where they're standing. (On a hill, on a flat ground, anywhere.) |
| What is inertia? | lazy |
| How are acceleration produced? | Forces (directly proportional) |
| How are acceleration and mass related? | Inversely proportional |
| What is acceleration at terminal velocity? | ZER0 |
| What falls faster with air resistance, a book or a piece of paper? | The book |
| What does the net force on an object at constant velocity equal? | ZER0 |
| What is free fall? | falling with no air resistance |
| What does force equal? | Mass times acceleration |
| What does constant force produce? | Constant acceleration |
| What is the relationship between weight and friction? | As weight increases, so do friction forces. (directly) |
| What is pressure? | Force per unit area (N/M^2) or pascals |
| What is terminal velocity for a person parachuting with their chute open? | 15 km/hr |
| Neglecting air resistance, what is the acceleration of a free falling object? | 9.8 m/s^2 |
| What is either a liquid or a gas? | A fluid |
| What is newton's 3rd law? | Every force is met with an equal and opposite force |
| Twosomeness | Pairs of forces |
| What happens to two objects that collide and one of them has more mass than the other? | The deceleration of the lighter object is greater |
| What does greater deceleration mean? | It means a greater change in velocity over time |
| How does a rocket propel itself up? | The gas molecules are pushing the rocket up |
| Can the force you exert on an object be less than the force the object exerts on you? | No. |
| If both sides of a tug-of-war pull with 1000N of force, what is the total tension on thee rope? | 1000N |
| Momentum? | Mass times velocity |
| Impulse? | Change in momentum |
| How does following through help a ball travel farther? | Increase the time of contact with the ball. This increases final momentum |
| How does padding help decrease force? | It increases the time of impact. |
| What is the relationship in terms of impuls between a cannonball and a cannon that was fired? | The impulse is the same. |
| Is momentum conserved in a collision? | Yes, but only if there is no net external force |
| Elastic Collision? | No lasting deformation, no heat produced, objects don't stick together. |
| Impulse Equation? | J=FT |
| What happens if an astronaut throws a ball of equal mass to himself? | They will both go in opposite directions with the same momentum. |
| Do elastic or inelastic collisions have greater impulse? | Elastic. |
| Momentum is a ______ quantity? | Vector quantity. |
| Work equation? | W=FD |
| Work unit? | Joule |
| One load is x work, double that load is how much work? | 2 times the work |
| How much work do you do if you push an object twice the distance with twice as much force? | 4 times the work |
| Power equation? | Power= work/time |
| Power unit? | Watt. |
| What is potential energy? | Energy an object has due to location |
| Potential energy is equal to what? | The amount of work done lifting it? |
| Kinetic Energy Equation? | KE= V^2 |
| When an object's speed doubles, what happens to it's kinetic energy? | It doubles |
| Mechanical Advantage? | Reduces the amount of force required to do the same amount of work. |
| What is the point located at the center of an object's mass distribution? | Center of mass |
| When something is spinning, where does it rotate around? | It rotates around its center of gravity |
Created by:
f3ldman
Popular SAT sets