STEMscopes: Potential and Kinetic Energy

A ball rolls across the floor. Because of friction, the ball will eventually slow down and come to a stop. Which of the following is evidence of energy transfer resulting from the change in the motion of the ball?

• Different surfaces create different amounts of friction.

• The ball moves in the same direction as it rolls across the floor.

• Energy sets the ball in motion.

• The ball and the floor gain a small amount of heat energy.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-5

A graph showing the kinetic energy of a 10 kg object at different speeds is provided. Based on the information in the graph, we can predict that the kinetic energy of the object at 2 m/s would be–

• 12 Joules.

• 8Joules.

• 38 Joules.

• 44 Joules.

Tags

NGSS.MS-PS3-1

A graph showing the kinetic energy and speed of a moving object is provided.

• Kinetic energy only changes when speed changes.

• Speed is only related to the size of an object.

• Kinetic energy increases as speed increases.

• All moving objects have the same kinetic energy.

Tags

NGSS.MS-PS3-1

At which point in the roller-coaster’s journey along the track does it have the greatest potential energy?

• W

• X

• Y

• Z

Tags

NGSS.MS-PS3-2

At which position on the diagram would an apple have the greatest potential energy?

• Position 1

• Position 2

• Position 3

• Position 4

Tags

NGSS.MS-PS3-2