Unit 2 review (long) Energy, Work, Power

When a pendulum swings, at which point is potential energy at its greatest

• 1
• 2
• 3
• 4

Tags

NGSS.MS-PS3-2

How is mechanical energy calculated?

• force x distance
• kinetic energy/potential energy
• gravitational energy x kinetic energy
• kinetic energy + potential energy

Friction transforms mechanical energy to __________ energy.

• chemical
• nuclear
• electromagnetic
• heat / thermal

Can energy be destroyed

• no
• yes

which point has the most kinetic energy?

• D

• E

• C

• F

Energy due to motion is ____________ energy. 

• Potential 
• Energy
• Kinetic
• Friction

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Energy can be _____________ or changed from one type of energy to another.

• destroyed

• transferred

• created

• ignored

As a pendulum swings from its highest to lowest position, what happens to its kinetic and potential energy? 

• Both the potential energy and kinetic energy decrease
• The potential energy decreases while the kinetic energy increases 
• The kinetic energy decreases while the potential energy increases 
• Both the potential energy and kinetic energy increase 

Tags

NGSS.MS-PS3-2

NGSS.MS-PS3-5

What is the kinetic energy of a 1500 gram object moving at a velocity of 100 m/s

• 112.5 J
• 7,500,000 J
• 75 J
• 7,500 J

Tags

NGSS.MS-PS3-1

How much work is done in holding a 15 N sack of potatoes while waiting in line at the grocery store for 3 minutes?

• 15 J
• 45 J
• 0 J
• 5 J