Unit 2 Science

Potential energy is based on an object’s ___.

• Gravity

• Mass

• Position

• Kinetic

The energy of motion is called _____ energy.

• Potential

• Electrical

• Chemical

• Kinetic

A force that opposes motion between two touching surfaces is called

• Friction

• Acceleration

• Speed

• Direction

The rate an object is moving relative to a reference point is it’s:

• velocity

• deceleration rate

• speed

• mechanical potential energy rate

The speed at which an object is moving in a specific direction is it’s:

• speed

• acceleration rate

• velocity

• mechanical potential energy rate

To calculate an object’s speed, you divide how far it travels by the:

• mass of the object

• acceleration of the object

• specific gravity of the object

• time it takes to get there

Newton's First Law of Motion states that an object in motion tends to stay in motion unless it:

• starts to decelerate

• starts to decelerate

• is acted upon by another force

• approaches the speed of light

A device which makes work easier is called a:

• magnet

• newton

• a simple machine

• force

How can you tell if an object is moving?

In our science experiment the higher the ramp the _____________ the speed of the marble

• faster

• slower