Chapter 11_Forces_Unit 3_Reviewer

Frame of reference refers to the ________ of the object.

• speed

• position

• friction

• acceleration

A simple machine that has a flat and slanted surface.

• pulley

• lever

• inclined plane

• screw

The force that you apply to the simple machine

• effort force

• output force

The force that applied to the load

• effort force

• output force

A two-part simple machine. It has wheel fixed to a central axle.

• wheel and axle

• lever

• screw

• pulley

It is required to move, stop, change direction and change the speed of an object.

• force

• gravity

• friction

• inertia

It is the tendency of a moving to stay in motion, or an object at rest to stay at rest

• force

• gravity

• friction

• inertia

The change of speed or direction of a moving object over time is called _______.

• inertia

• acceleration

• distance

• speed

It refers to the location of an object.

• time

• acceleration

• position

• speed

Distance can be measured.

• True

• False