The ability to do work or cause change

• work

• gravity

• motion

• force

force exerted on an object that causes it to move

• energy

• work

• motion

• force

A push or pull

• work

• force

• motion

• energy

Renewable sources of energy

• hydro-electrical

• coal

• oil

• nuclear energy

the change in position of an object

• acceleration

• equilibrium

• unbalanced force

• motion

the force by which a planet or other body draws an object towards its centre.

• applied force

• gravity

• motion

• pressure

A force in the opposite direction of the motion

• applied force

• gravity

• motion

• friction

As a ball rolls down a hill, it begins to move faster. What force besides the initial force is causing the ball to roll faster?

• friction

• the hill

• the ball

• gravity

For work to be done on an object must have

• a force applied on an object

• energy

• the object moves

• the object moves in the same direction as the force applied on it

Force can cause a ______

• Moving object to change direction

• Moving object to change speed

• a stationary object to start moving

• all of the above