Force and Motion

Front

What is the force that keeps satellites in orbit around Earth?

Back

Gravity.

Front

If a person on the left exerts a force of 45 N and a person on the right exerts a force of 32 N, what is the net force?

Back

13 N.

Front

If a man and a ball travel 90 m in 9 seconds, what is their average speed?

Back

10 m/s.

Front

What is the meaning of acceleration?

Back

Any change in the speed or direction of an object.

Front

If no force is being applied to a stationary object, what will happen to the object?

Back

It will remain stationary.

Front

What is the formula for calculating speed?

Back

Speed = Distance / Time.

Front

What is inertia?

Back

The tendency of an object to resist changes in its state of motion.

Front

What is Newton's First Law of Motion?

Back

An object at rest stays at rest, and an object in motion stays in motion unless acted upon by a net external force.

Front

What is the unit of force?

Back

Newton (N).

Front

What is the relationship between mass and acceleration according to Newton's Second Law?

Back

Force = Mass x Acceleration (F = ma).