Force and Motion

How fast an object moves is its ​ ​ (a)  

• speed
• work
• force
• pull

A straight bar that moves on a fixed point is a ​ (a)  

• lever
• wedges
• pulley
• motion

The food we eat has stored ​ (a)  

• energy
• motion
• force
• speed

A pulley is an example of a ​ (a)  

• simple machine
• compound machine
• potential energy
• kinetic energy

Most cutting tools are simple machines called ​ (a)  

• wedges
• levers
• pulleys
• wheels

A door knob is an example of a​ (a)  

• wheel and axle
• lever
• pulley
• wedge

Two or more simple machines together make a​ (a)  

• compound machine
• simple machine
• force
• motion

All moving objects have​ (a)  

• kinetic energy
• force
• pulley
• potential energy

While an object is changing position it is in ​ (a)  

• motion
• speed
• force
• energy

Lifting a feather is an example of ​ (a)  

• work
• energy
• speed
• force