The amount of energy transferred to an object to make it move.

A push or a pull.

The ability to exert force.

A force that pulls objects towards the center of the Earth.

A tool used to measure the amount of force.

A force which tries to stop things from sliding past each other.

To put something on a surface to reduce friction.

An upward force exerted by a liquid on an object.

The unit of force.

A drawing that shows the direction and size of forces acting on an object.

When two forces are opposite but not equal.

When an object is moving, then the two forces acting on it must be...

The two forces acting on the object are...

The two forces acting on the object are...

An apple falls from a tree because it is pulled towards the ground. What causes this?

An box moves to a distance when a man pushes it. Is work done?

The wall does not move when the boy pushes it. Is work done?

A person can skate on ice but not on concrete because friction on ice is .... the friction on concrete.

A ball falls to the ground. Which exerts a GREATER force?

The apple does not fall to the ground because the two forces acting on it are...

Who does MORE work?

In which surface can the man travel further?

A boat can float on water because the water pushes the boat upwards. What causes this?

The ball rolling on the floor eventually stops. What causes this?