Force and Motion

A push or a pull that can move an object is a __________.

• gear
• lever
• force
• machine

Which statement about the force of gravity is true?

• The smaller the masses of the two objects, the larger the effects of gravity between them.
• The smaller the distance between two objects, the larger the force of gravity between them.
• Distance affects the force of gravity, but mass does not.
• Mass affects the force of gravity, but distance does not.

The force that opposes the motion of two surfaces sliding past each other is called ___________.

• acceleration
• inertia
• friction
• unbalanced

The direction and speed of an object is an object's _________.

• velocity
• average displacement
• average speed
• displacement

The force resulting from the pull of the earth on an object

• mass
• gravity
• acceleration
• unbalance

Where in the universe does gravity act?

• nowhere
• only on Earth
• only between the Sun and planets
• everywhere

Acceleration is the change in speed or direction of and object.

• True
• False

What does this graph represent?

• Constant Speed
• Acceleration
• Not moving

What does this graph represent?

• Constant speed
• Acceleration
• Not moving

What does this graph represent?

• Constant speed
• Acceleration
• Not moving