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MOTION REVIEW
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| Question | Answer |
|---|---|
| What is velocity? | Speed and direction of an object. |
| What is speed? | How fast an object is moving. |
| Explain displacement. | the change in position of an object. |
| What is distance? | The amount of space between or how far something is. |
| Explain acceleration. Tell three ways an object can accelerate. | A change in velocity or direction or a change in both. |
| Explain why deceleration is also acceleration. | Changing speed |
| What does a flat line on a distance/time graph represent? | indicates the object is travelling at a constant speed |
| Greater slope up means ____________ on a distance/time graph. | Faster speed |
| Greater slope down means ____________ on a distance/time graph. | Faster you go back to the origin |
| What does a flat line on a velocity/time graph represent? | indicates the object is travelling at a constant speed |
| What does an upward slope on a velocity/time graph represent? | velocity is increasing |
| What does a downward slope on a velocity/time graph represent? | slope is negative |
| What does constant velocity mean? | Speed and direction of an object stays the same |
| Tell three ways velocity can change. | it can slow down, it can speed up, or it can change direction. |
| If an object’s mass increases, its acceleration will ______________. | decrease |
| Force = _________ x ____________ | Force = Mass x Acceleration |
| What are unbalanced forces? | forces applied to an object in opposite directions that are not equal in size |
| What are balanced forces? | Balanced forces are equal in size and opposite in direction |
| Net force = _______________ | sum of forces acting on a particle or body |
| What type of force does not cause acceleration? | no acceleration occurs when the forces are balanced |
| What is magnitude? | the great size or extent of something |
| What is vector? | a quantity having direction as well as magnitude |
| Explain Newton’s First Law of Motion. | if a body is at rest or moving at a constant speed in a straight line, it will remain at rest or keep moving in a straight line at constant speed unless it is acted upon by a force. |
| Greater mass = __________ inertia | The more mass an object has, the greater its inertia |
| Explain Newton’s Second Law of Motion | the acceleration of an object is directly related to the net force and inversely related to its mass |
| Explain Newton’s Third Law of Motion. | in nature there is an equal and opposite reaction. |
| What is inertia? | a property of matter by which it continues in its existing state of rest or uniform motion in a straight line, unless that state is changed by an external force. |
| What is another name for Newton’s First Law of Motion? | the law of inertia |
| What does air resistance depend upon? | depends on its speed |
| What is the formula for velocity? | Speed Velocity |
| What is the difference between speed and velocity? | Put another way, speed is a scalar value, while velocity is a vector. |
| What is the difference between mass and weight? | mass is the amount of matter in an object |
| How does your mass on Earth compare to your mass on the moon? | Your weight on the Moon is 16.5% what you would experience on Earth. |
| How does your weight on Earth compare to your weight on the moon? | Your weight on the Moon is 16.5% what you would experience on Earth |
| Explain friction. How does it affect the movement of an object? | Friction is a force that occurs when two surfaces slide past one another. |
| How does the mass of an object affect the amount of force needed to accelerate the object? | As the force acting upon an object is increased, the acceleration of the object is increased. |
Created by:
scotty33
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