Force and Motion

Friction is...

• a force that opposes motion

• a force that makes things increase their speed

• a force that moves objects in opposite directions

• a force that opposes nature

A force is a...

• character from Star Wars

• push or a pull

• type of soccer move

• a planet

Forces that do not cancel each other out and cause an object to change its motion are called this...

• cancel forces

• changed forces

• unbalanced forces

• balanced forces

Forces that act together on an object without changing its motion are called...

• coupled forces

• unbalanced forces

• regular forces

• balanced forces

To change in velocity with respect to time is known as...

• chronos

• acceleration

• plotting

• speeding

Work is...

• what is done when a force changes an object's motion

• hard

• boring

• what is done when you give up on a task

Name the simple machine shown here.

• lever

• wedge

• wheel and axle

• pulley

A machine with few or no parts is known as...

• useless

• a simple machine

• a complex machine

• a machine in progress

Name the simple machine pictured here.

• wheel and axle

• screw

• lever

• incline plane

A compound machine is...

• hard to build

• two or more simple machines put together

• bad for the environment

• complicated