Kinetic energy

Which of the following statements is correct?

• The car has less kinetic energy because it has more mass than the girl.

• The car has the most kinetic energy because it has more mass than the girl.

• The car and the girl have the same amount of kinetic energy because they are moving at the same speed.

• The girl has the most kinetic energy because she has less mass than the car.

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-4

NGSS.MS-PS3-5

A book has a mass of 5 grams. Another book has a mass of 10 grams. Which book will take more force to move?

• the book that weighs 5 grams

• the book that weighs 10 grams

• They will both take the same amount of force to move.

Tags

NGSS.MS-PS2-2

What can you say about the potential energy of the two sleds shown above?

• Sled B has more potential energy.

• There is not enough information to know which sled has more potential energy.

• The two sleds have the same potential energy.

• Sled A has more potential energy.

Tags

NGSS.MS-PS2-4

NGSS.MS-PS3-2

Why does a soccer ball eventually stop rolling once it’s kicked on a grassy field?

• none of these

• Gravity acts upon it.

• Light acts upon it.

• Friction acts upon it.

Tags

NGSS.MS-PS2-2

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.MS-PS3-2

NGSS.MS-PS3-5

Car 1 and Car 2 have the same mass. Which of the following statements is true?

• Car 1 has the most kinetic energy because it is moving at a faster rate of speed.

• Car 2 has the least amount of kinetic energy because it is actually smaller than car one.

• Car 2 has the most kinetic energy because it is moving at a slower rate of speed.

• Car 1 has the least amount of kinetic energy because it is moving at a faster rate of speed.

Tags

NGSS.MS-PS3-1

The two sleds shown below are about to collide. If they stick together in the collision, what will happen after the collision? (In this collision, there is no friction between the sleds and the snow.)

• The two sleds will move to the left.

• The two sleds will move to the right.

• There is not enough information to know which sled will be pushed backward.

• The two sleds will be motionless in the middle.

Tags

NGSS.MS-PS2-1

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.MS-PS3-1

Why does a brick that is thrown into the air fall back down?

• Gravity acts upon it.

• Friction acts upon it.

• none of these

• Light acts upon it.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

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.MS-PS2-1

NGSS.MS-PS2-2

NGSS.MS-PS3-1

NGSS.MS-PS3-5