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Force and Motion
A review of our Force and Motion Unit
Question | Answer |
---|---|
What is Newton's First Law of Motion? | An object in motion will stay in motion until it is acted upon by an unbalanced force. |
What is Newton's Second Law of Motion? | Force = mass x acceleration |
What is Newton's Third Law of Motion? | For every action there is an equal and opposite reaction. |
What is the symbol for Force? | F |
What is the symbol for Acceleration? | a |
What is the symbol for Momentum? | p |
What is the symbol for Velocity? | V |
What is the symbol for Mass? | m |
What is the symbol for Distance? | d |
What is the symbol for Time? | t |
What is the SI unit for Force? | kgm/sec2 or Newton (N) |
What is the SI unit for Momentum? | kgm/sec |
What is the SI unit for Acceleration? | m/sec2 |
What is the SI unit for Time? | sec |
What is the SI unit for Mass? | kg |
What is the SI unit for Distance? | m |
What is the SI unit for Velocity? | m/sec |
What is a force? | Anything that pushes or pulls |
What is motion? | Movement between two locations |
What is speed? | How fast an object travels between two locations |
What is a vector? | A magnitude and direction |
What is a scalor? | A magnitude |
What is velocity? | How fast an object travels between two locations and in what direction |
What is momentum? | How hard it is to stop a moving object |
What is acceleration? | A slowing down, speeding up or change in direction |
What is a balanced force? | The net force is zero due to equal and opposite forces canceling out or a constant velocity |
What is an unbalanced force? | A force that is not cancelled out and produces acceleration |
What is gravity? | An attraction between two objects |
What is inertia? | An object in motion does not want to stop (or an object at rest does not want to move) |
Who is Isaac Newton? | The person who discovered gravity and described the Laws of Motion |
On a position and time graph, what does a positive slope mean? | The object is moving in a positive direction |
On a position and time graph, what does a negative slope mean? | The object is moving in a negative direction |
On a position and time graph, what does a slope of zero mean? | The object is not moving |
On a velocity and time graph, what does a positive slope mean? | The object is going fast (positive acceleration) |
On a velocity and time graph, what does a negative slope mean? | The object is sloing down (negative acceleration) |
On a velocity and time graph, what does a slope of zero mean? | The object is moving with a constant velocity (acceleartion is zero) |
On a position and time graph, which is the independent variable (X axis)? | Time |
On a velocity and time graph, which is the dependent variable (Y axis)? | Velocity |
What is an example of Newton's first law? | A baseball in space will not stop until it hits another object. |
What is an example of Newton's second law? | A train is harder to stop than a small car because it has more mass. |
What is an example of Newton's third law? | A bowling ball knocks over the pins. |
What is the equation for force? | F = m x a |
What is the equation for velocity? | V = d/t |
What is the equation for acceleration? | a = v/t |
What is the equation for momentum? | p = m x V |