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Motion Review
| Question | Answer |
|---|---|
| What is velocity? | Speed in a given direction |
| What is speed? | Measure of distance traveled per unit of time |
| Explain displacement. | The change in position from an object's 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 object’s velocity or speed; speed changes, direction changes, or both speed and direction change |
| Explain why deceleration is also acceleration. | Acceleration is the rate of change and deceleration is still changing |
| What does a flat line on a distance/time graph represent? | Stopped |
| Greater slope up means ____________ on a distance/time graph. | Faster speed |
| Greater slope down means ____________ on a distance/time graph. | Returning to stop |
| 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 |
| What does a downward slope on a velocity/time graph represent? | Deceleration |
| What does constant velocity mean? | Constant speed in a given direction |
| Tell three ways velocity can change. | Speed changes, direction changes, or both speed and direction change |
| If an object’s mass increases, its acceleration will ______________. | Decrease |
| Force = _________ x ____________ | Force= 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 in opposite directions |
| Net force = _______________ | The sum of all forces 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 in motion will stay in motion and a body at rest will stay at rest until an unbalanced force acts upon it |
| 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 an equal and opposite reaction |
| What is inertia? | Stay constant |
| What is another name for Newton’s First Law of Motion? | The Law of Inertia |
| What does air resistance depend upon? | Size, shape, speed, and surface area of the object falling |
| What is the formula for velocity? | Distance/Time |
| What is the difference between speed and velocity? | Velocity is the speed in a given direction and speed has no direction |
| What is the difference between mass and weight? | Mass never changes and weight does |
| How does your mass on Earth compare to your mass on the moon? | It is the same |
| How does your weight on Earth compare to your weight on the moon? | Your weight is lower on the moon because of zero gravity |
| Explain friction. How does it affect the movement of an object? | It’s the rubbing on a surface that slows things down when they are in motion |
| How does the mass of an object affect the amount of force needed to accelerate the object? | The greater the mass, the more force it takes to move it |
| Explain how to solve a vector diagram (to determine a net force). | subtract the bigger number from the smaller number |
Created by:
AnnaMckenzee
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