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Motion Review
| Question | Answer |
|---|---|
| What is velocity? | speed in a given direction |
| What is speed? | the measure of distance traveled per unit of time; how fast something is going; distance/time |
| Explain displacement. | the change in position from an object's original location |
| What is distance? | the amount of ground an object has covered during its motion |
| Explain acceleration. Tell three ways an object can accelerate. | change in velocity, change in direction, or a in velocity and direction |
| Explain why deceleration is also acceleration. | Acceleration is the rate of change in a object's velocity or speed. |
| What does a flat line on a distance/time graph represent? | stopped (time passes, but distance does not change) |
| Greater slope up means ____________ on a distance/time graph. | constant speed away from starting position |
| Greater slope down means ____________ on a distance/time graph. | constant speed back toward starting position |
| What does a flat line on a velocity/time graph represent? | constant speed |
| What does an upward slope on a velocity/time graph represent? | acceleration away from starting position |
| What does a downward slope on a velocity/time graph represent? | slowing down, away from starting position |
| What does constant velocity mean? | an object's speed and direction does not change |
| Tell three ways velocity can change. | change in speed, change in direction, and change in speed and direction |
| If an object’s mass increases, its acceleration will ______________. | decrease |
| Force = _________ x ____________ | (mass) x (acceleration) |
| What are unbalanced forces? | unequal forces that act on an object. Forces are not equal in motion and/or direction. Cause a change in motion in motion. Net force not equal to zero. |
| What are balanced forces? | equal forces that act on an object in opposite direction. Do not cause a change in motion. Net force of zero |
| Net force = _______________ | the sum of all force acting on an object |
| What type of force does not cause acceleration? | Balanced Force |
| What is magnitude? | size |
| What is vector? | direction |
| Explain Newton’s First Law of Motion. | A body at rest will remain at rest, and a body in motion will remain in motion unless it is acted upon by an unbalanced force. |
| Greater mass = __________ inertia | greater |
| Explain Newton’s Second Law of Motion | when a net force acts on an object, the object will accelerate in the direction of this net force |
| Explain Newton’s Third Law of Motion. | for every force or action there is a equal and opposite reaction |
| What is inertia? | motion will stay constant. |
| What is another name for Newton’s First Law of Motion? | law of inertia |
| What does air resistance depend upon? | the speed of the object and its surface area |
| What is the formula for velocity? | distance/time |
| What is the difference between speed and velocity? | velocity is speed and direction |
| What is the difference between mass and weight? | mass is constant, weight is the effect of gravity |
| How does your mass on Earth compare to your mass on the moon? | Mass remains the same |
| How does your weight on Earth compare to your weight on the moon? | The pull of gravity is stronger on Earth than on the moon. So your weight would be heavier on Earth |
| Explain friction. How does it affect the movement of an object? | resistance that one surface or object encounters when moving over another. It creates resistance, making the object slow down |
| How does the mass of an object affect the amount of force needed to accelerate the object? | greater mass = greater force |
| Explain how to solve a vector diagram (to determine a net force). | Find the sum of both forces. (Subtract) |
Created by:
Khailand
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