Physics Review

Momentum is a ____________________ quantity

• science
• scalar
• vector
• energy

The equation to calculate momentum is

• p=mv
• p=1/2mv²
• p=mgh
• p=mg

What is the net force?

• 40 N left
• 0 N Balalnced
• 400 N right
• 40 N right

A 2 kg cart has a momentum of 16 kg m/s. What is its velocity?

• 8 m/s
• 32 m/s
• 0.125 m/s
• 18 m/s

This is an example of a _______ circuit

• open
• series
• parallel
• square

If the voltage is increased and the resistance stays the same, current will ____.

• Increase
• Decrease
• Stay the same
• Not enough info

What kind of magnet can be turned on and off?

• refridgerator magnet
• electromagnet
• magnetite
• iron

What causes magnetism?

• the sun

• moving neutrons

• moving charges

• friction

Magnetism is generated by moving

• protons.
• electrons.
• neutrons.
• elements.

Electric motors are devices that convert _____ energy into  _____ energy.

• electrical; mechanical
• mechanical; electrical
• chemical; potential
• mechanical; kinetic