Energy Calculations

What kind of energy does a marble at the top of a hill have?

• gravitational potential

• chemical potential

• kinetic

• thermal

What is the correct unit for energy?

• meters (m)

• kilogram meters per second (kg m/s)

• Newtons (N)

• Joules (J)

What does conservation of energy mean?

• Total energy increases

• Total energy decreases

• Total energy in the universe stays the same

Gravitational potential energy depends on the ________ and ________ of the object. 

• Height and mass
• Friction and movement
• Mass and Movement
• Height and Friction 

Tags

NGSS.MS-PS3-2

What is the equation for calculating gravitational potential energy

• mv

• 1/2 mv^2

• mgh

• Ft

If the marble had a mass of 0.3kg and the hill was 2.3 m tall, how much potential energy did it have at the top of the ramp?

• 2.3 J

• 0.23 J

• 6.9 J

• 5.2 J

Tags

NGSS.MS-PS2-4

NGSS.MS-PS3-2

If the 0.3 kg marble was moving at 6 m/s at the bottom of the ramp, how much kinetic energy did the marble have?

• 5.4 J

• 1.8 J

• 3 J

• 6 J

Tags

NGSS.HS-PS3-1

The faster an object moves, the ________ kinetic energy it has. 

• more
• less
• none of the above
• all of the above 

Tags

NGSS.MS-PS3-1

What is the equation for calculating kinetic energy?

• mv

• 1/2 mv^2

• mgh

• Ft

Tags

NGSS.HS-PS3-2

If the 1.2 kg basketball rolls at 3 m/s, what is it's kinetic energy?

• 2.7

• 5.4

• 3.6

• 9

Tags

NGSS.HS-PS3-1