Forces, Net Force & Diagrams Practice

Front

What happens to forces when a marble speeds up rolling down a ramp?

Back

The forces are unbalanced.

Front

How does a boy appear to be moving relative to a girl riding a bicycle after she passes him?

Back

The boy appears to get closer.

Front

What is the role of force for a moving object?

Back

Force is needed for a moving object to change its speed.

Front

What is the net force if the result is 40 N to the right?

Back

The net force is 40 N right.

Front

What change in motion would you expect if an object is acted upon by a net force to the left?

Back

The object would accelerate to the left.

Front

Define balanced forces.

Back

Balanced forces are equal in size and opposite in direction, resulting in no change in motion.

Front

Define unbalanced forces.

Back

Unbalanced forces are not equal and can cause an object to accelerate.

Front

What is inertia?

Back

Inertia is the tendency of an object to resist changes in its state of motion.

Front

What is the formula for calculating net force?

Back

Net force = mass x acceleration (F = ma).

Front

What does it mean if an object is at rest?

Back

An object at rest has a net force of 0 N acting on it.