Forces and Motion

Front

In the equation f=ma, 'F' stands for _______.

Back

force

Front

What type of force is needed to change an object's motion?

Back

Unbalanced Forces

Front

Why is it harder for the boy in Image B to get down the hill?

Back

Friction

Front

What happens to the speed of an object as it falls freely under the influence of gravity (ignoring air resistance)?

Back

It increases

Front

What is the effect of increasing mass on the gravitational force between two objects?

Back

The gravitational force increases

Front

What is the definition of force?

Back

A push or pull on an object that can cause it to accelerate.

Front

What are balanced forces?

Back

Forces that are equal in size and opposite in direction, resulting in no change in motion.

Front

What is friction?

Back

A force that opposes the motion of an object.

Front

What is gravitational force?

Back

The attractive force between two objects due to their mass.

Front

What is acceleration?

Back

The rate of change of velocity of an object.