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Motion review
| Question | Answer |
|---|---|
| What is velocity? | Speed in any given direction |
| What is speed? | The measure of distance traveled per unit of time ; how fast something is moving;distance divided by time. |
| Explain displacement? | The change in position from an objects 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 change in both direction and velocity. |
| Explain why deceleration is also acceleration. | Deceleration slowing down and acceleration is a change in speed which is what is what happens when something decelerates. |
| What does a flat line on a distance/time graph represent? | It means stopped/ not moving. |
| Greater slope up means ____________ on a distance/time graph. | Constant speed away from starting point. |
| Greater slope down means ____________ on a distance/time graph. | Constant speed towards starting point |
| What does a flat line on a velocity/time graph represent? | Steady 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? | An object is traveling at the same distance every second |
| 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 ____________ | Mass x Acceleration |
| What are unbalanced forces? | Unequal forces that acts on an object; forces are not equal in size and/or direction; cause a change in motion; create net force not equal to zero |
| What are balanced forces? | Equal forces that act on a object in opposite directions; do not cause a change in motion;no net force; no acceleration; velocity remains constant |
| Net force = _______________ | Sum of all forces acting on a object |
| What type of force does not cause acceleration? | Balanced force |
| What is magnitude? | The size of a force |
| What is vector? | The direction of a force |
| Explain Newton’s First Law of Motion. | A body in motion is likely to stay in motion, and a body at rest will stay at rest unless acted on by an unbalanced force (inertia) |
| 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 this net force. Greatermass= Greater acceleration. Air resistance is the force of air that pushes against an object through the air. Air resistance is fluid friction |
| Explain Newton’s Third Law of Motion. | For every force or action there is an equal and opposite reaction. |
| What is inertia? | An objects motion will stay constant |
| What is another name for Newton’s First Law of Motion? | Law of Inertia |
| What does air resistance depend upon? | Size, shape, and speed. |
| What is the formula for velocity? | Distance/time |
| What is the difference between speed and velocity? | Velocity is speed in any direction and speed is measure of distance traveled per unit of time |
| What is the difference between mass and weight? | Mass is how much matter is in something and weight is the amount of gravitational force on an object |
| How does your mass on Earth compare to your mass on the moon? | Mass doesn't change because it is the amount of matter. |
| How does your weight on Earth compare to your weight on the moon? | Your weight on the moon would be lighter on the moon because of the gravitational pull |
| Explain friction. How does it affect the movement of an object? | It slows down the movement of the object and lowers the energy of the object |
| How does the mass of an object affect the amount of force needed to accelerate the object? | The greater the mass the less acceleration/ the less the mass the greater the acceleration |
| Explain how to solve a vector diagram (to determine a net force). | You add all the forces together to get the sum |
Created by:
ArielN
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