Calculating Kinetic Energy II

Which of the following is a correct statement?

• Both the mass and speed of an object affect the amount of kinetic energy it will have.

• Only the speed of an object affects the amount of kinetic energy it will have.

• Only the mass of an object affects the amount of kinetic energy it will have.

• Neither the mass nor speed of an object affects the amount of kinetic energy; only the height of the object.

Tags

NGSS.HS-PS2-1

A sled starts at rest with 51,450 J of potential energy. After traveling part of the way down the slope, the sled has 32,781 J of potential energy. If there is no friction, what is the kinetic energy of the sled?

• 18,669 J

• 51,450 J

• 84,231 J

• 32,781 J

Tags

NGSS.HS-PS3-1

How could you increase the number of snowmen destroyed by the sled sliding down the hill?

• Increase the starting kinetic energy of the sled.

• Increase the mass of the sled.

• all of the above

• Increase the starting height of the sled.

Tags

NGSS.HS-PS2-1

Where would this tossed baseball have the least amount of kinetic energy?

• point W

• point X

• point y

• point z

Tags

NGSS.MS-PS3-1

Where would this tossed baseball have the greatest amount of kinetic energy?

• point W

• point X

• point y

• point z

Tags

NGSS.HS-PS3-2

Kinetic energy is measured in

• Newtons (N)

• Joules (J)

• Kilograms (kg)

• miles per hour (mph)

Mass and speed both affect the amount of kinetic energy an object has, but ____________ has a greater effect.

• mass

• speed

• volume

• weight

Tags

NGSS.MS-PS3-1

Increasing an object's mass will increase its kinetic energy.

• true

• false

Increasing an object's speed will increase its kinetic energy.

• false

• true

Tags

NGSS.HS-PS3-2

If all objects are moving as the exact same speed, which would have the greatest kinetic energy?

• tennis ball

• football

• notebook

• box of 20 textbooks

Tags

NGSS.MS-PS3-1