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Motion Review
Motion
| Term | Definition |
|---|---|
| What is velocity? | speed in any given direction |
| What is speed? | measure of distance traveled per unit of time; how fast something is moving; distance divided by time. |
| Explain displacement. | change in position from an objects original location. |
| What is distance? | amount of ground an object has covered during its motion |
| Explain acceleration. Tell three ways an object can accelerate. | rate of change in an objects velocity or speed. - going down a hill - speeding up - going up a hill |
| Explain why deceleration is also acceleration. | because speed is decreasing and acceleration is a rate of change in an object. |
| What does a flat line on a distance/time graph represent? | stopped |
| Greater slope up means ____________ on a distance/time graph. | constant speed away |
| Greater slope down means ____________ on a distance/time graph. | constant speed |
| 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, deceleration |
| What does constant velocity mean? | an object is traveling at the same distance every second |
| Tell three ways velocity can change. | changes direction, velocity and direction, or changes velocity |
| 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 |
| What are balanced forces? | equal forces that act on an object |
| Net force = _______________ | sum of all forces |
| What type of force does not cause acceleration? | balance |
| What is magnitude? | the size or quantity |
| What is vector? | a specific amount of force and direction |
| Explain Newton’s First Law of Motion. | a body in motion, will stay in motion a body at rest, will stay at rest |
| Greater mass = __________ inertia | greater inertia |
| Explain Newton’s Second Law of Motion. | when a net force acts on an object, the object will accelerate in the direction of the net force. |
| Explain Newton’s Third Law of Motion. | for every reaction there is an equal and opposite reaction |
| What is inertia? | resistance to change |
| What is another name for Newton’s First Law of Motion? | Law of Inertia |
| What does air resistance depend upon? | speed of an object and the surface |
| What is the formula for velocity? | distance/time |
| What is the difference between speed and velocity? | speed is how fast something is going and velocity is that and the direction |
| What is the difference between mass and weight? | mass never changes |
| How does your mass on Earth compare to your mass on the moon? | it is the same because mass doesn't change |
| How does your weight on Earth compare to your weight on the moon? | it would change |
| Explain friction. How does it affect the movement of an object? | it adds resistance |
| How does the mass of an object affect the amount of force needed to accelerate the object? | if an object is heavier.. it will go slower if an object is lighter.... it will go faster |
| Explain how to solve a vector diagram (to determine a net force). | you have to find the sum of the forces together |
Created by:
Brylee
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