Energy Calculations

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? (KE = 1/2mv²)

• 5.4 J

• 1.8 J

• 3 J

• 6 J

Tags

NGSS.MS-PS3-1

What is the correct unit for energy?

• meters (m)

• kilogram meters per second (kg m/s)

• Newtons (N)

• Joules (J)

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

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

What is the equation for calculating kinetic energy?

• mv

• 1/2 mv^2

• mgh

• Ft

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-4

If the 1.2 kg basketball rolls at 3 m/s, what is it's kinetic energy? (KE = 1/2mv²)

• 2.7

• 5.4

• 3.6

• 9

Tags

NGSS.MS-PS3-1

A 5 Kg body is having a Kinetic energy of 250 J. What is the velocity (or speed) of the body?

• 10 m/s

• 15 m/s

• 20 m/s

• 40 m/s

Tags

NGSS.MS-PS3-1

What is the mass of a ball that has a kinetic energy of 115 J and is traveling at a speed of 9 m/s?

• 1035 kg

• 23.5 kg

• 12.8 kg

• 2.84 kg

Tags

NGSS.MS-PS3-1

A exercise ball is on a table 2.5 m above the ground. What is the mass of the ball if it has a GPE of 56.8 J?

• 71 kg

• 22.72 kg

• 142 kg

• 2.32 kg

Tags

NGSS.MS-PS3-2