Balanced and Unbalanced Forces

Forces may or may not cause __________.

A __________ is a push or pull on an object.

Two force equal in size and acting in opposite directions on an object.

Balanced or unbalanced: an earthquake releasing energy at the fault line

Balanced or unbalanced: An airplane in flight at cruising altitude

A soccer ball sitting on the floor is an example of a __________ force.

Two forces that are unequal in size and opposite in direction is an __________ force.

True or false: Unbalanced forces cause an object to change speed, direction, and color

The overall force acting on an object is called __________ __________.

Net force is measured in __________ (N).

Balanced or unbalanced: Two people pulling opposite directions on a rope with the same amount of force

A skier going down a mountain

Balanced or unbalanced: A book sitting high upon a bookshelf

Balanced or unbalanced: Two women lifting a box into the back of a truck

True or false: An object stays still or continues to move at the same speed and in the same direction during a balanced force.

The moon orbiting the Earth is an example of an __________ force.