Test study guide: Forces & Motion

Front

What is friction?

Back

Friction is a force that opposes the motion of an object, acting in the opposite direction to the movement.

Front

What is average speed?

Back

Average speed is the total distance traveled divided by the total time taken to travel that distance.

Front

What does Newton's 1st Law state?

Back

Newton's 1st Law states that an object at rest will stay at rest, and an object in motion will stay in motion at a constant velocity unless acted upon by a net external force.

Front

What does Newton's 2nd Law describe?

Back

Newton's 2nd Law describes the relationship between force, mass, and acceleration, stating that Force = Mass x Acceleration (F = ma).

Front

What does Newton's 3rd Law state?

Back

Newton's 3rd Law states that for every action, there is an equal and opposite reaction.

Front

How do you calculate average speed?

Back

Average speed = Total distance / Total time.

Front

What is instantaneous speed?

Back

Instantaneous speed is the speed of an object at a specific moment in time.

Front

What is the relationship between mass and acceleration in Newton's 2nd Law?

Back

In Newton's 2nd Law, if the mass of an object increases, the acceleration decreases for a constant force.

Front

What is the effect of friction on motion?

Back

Friction slows down the motion of objects and can eventually bring them to a stop.

Front

What is the unit of force?

Back

The unit of force is the Newton (N).