Second Semester Finals Review

What is the unit to MEASURE force?

• Kilogram

• Meter

• Pounds

• Newton

Force the opposes motion between 2 surfaces

• force
• Newton
• friction
• net force

The acceleration of objects falling on Earth due to gravity is

• 9.8 m/s

• 9.8 m/s²

• 9.8 g/mL

• 9.8 g/m/m

What is energy?

• moving energy

• stored energy

• renewable energy

• The ability to do work.

At which point of the roller coaster is potential energy the greatest?

• W

• X

• Y

• Z

Mechanical energy is the sum of an object's _____ energy and _____ energy.

• thermal, chemical
• potential, chemical
• kinetic, chemical
• potential, kinetic

What part of the wave is shown at letter A?

• crest
• trough
• wavelength
• frequency

What happens to frequency when the energy increases?

• it increases
• it decreases
• it stays the same

What is the speed of a wave that has a wavelength of 2 and a frequency of 2.5?

• 2.5 m/s
• 5 m/s
• 4.5 m/s
• 6 m/s

Which wave has the most energy?

• top wave
• bottom wave