Energy Calculations!

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

• gravitational potential

• chemical potential

• kinetic

• thermal

Tags

NGSS.MS-PS3-2

What is the equation for gravitational potential energy

• mv

• 1/2 mv^2

• mgh

• Ft

Tags

NGSS.MS-PS3-2

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

• .23

• 6.9

• 5.2

Tags

NGSS.MS-PS3-2

What is the correct unit for energy?

• meters (m)

• kilogram meters per second (kg m/s)

• Newtons (N)

• Joules (J)

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

• gravitational potential

• chemical potential

• kinetic

• thermal

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

What is the equation for kinetic energy?

• mv

• 1/2 mv^2

• mgh

• Ft

Tags

NGSS.MS-PS3-1

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.MS-PS3-1

What does conservation of energy mean?

• Total energy increases

• Total energy decreases

• Total energy stays the same

If the marble had 6.9 J of (potential) energy at the top of the hill and 5.4 J of (kinetic) energy at the bottom of the hill, was energy conserved and why?

• Yes because the total energy stayed the same

• Yes because the total energy changed

• No because the total energy stayed the same

• No because the total energy changed

Tags

NGSS.MS-PS3-5

If the marble hits a basketball which makes the tennis ball roll across the lab table, what kind of energy transfer happened?

• kinetic-potential

• kinetic-kinetic

• kinetic-electrical

• kinetic-thermal

Tags

NGSS.MS-PS2-1

NGSS.MS-PS3-4

NGSS.MS-PS3-5