Unit 3 & 4 Review

The energy related to the motion of an object is called:

• Kinetic energy

• Potential energy

• Electrical energy

• Chemical energy

Describe the energy transformation that occurred when children slid down the slide.

• Kinetic energy transformed into chemical energy

• Potential energy transformed into kinetic energy

• Kinetic energy transformed into potential energy

• Potential energy transformed into electrical energy

Where on the roller coaster would you find the most potential energy and the most kinetic energy?

• At the highest point of the roller coaster

• At the starting point of the roller coaster

• At the lowest point of the roller coaster

• At the middle point of the roller coaster

Describe where on the roller coaster you would find the least potential energy and the least kinetic energy.

• At the middle point of the roller coaster

• At the starting point of the roller coaster

• At the lowest point of the roller coaster

• At the highest point of the roller coaster

A student who was training for a cross country race jogged for 2.0 hours and covered a distance of 14.0 kilometers. What was the average speed of the student?

• 28.0 km/hr

• 0.14 km/hr

• 7.0 km/hr

• 12.0 km/hr

During an investigation, students placed a toy car at the top of a ramp and recorded the distance and time at different intervals. The graph below is a record of their data. What is the average speed of the toy car between 3 and 5 seconds of the investigation?

• 2.0 m/s

• 4.0 m/s

• 6.5 m/s

• 13.0 m/s

The energy related to the motion of an object is called —

• potential energy
• kinetic energy

A student who was training for a cross country race jogged for 2.0 hours and covered a distance of 14.0 kilometers. What was the average speed of the student?

• 12.0 km/hr
• 0.14 km/hr
• 7.0 km/hr

Observe the inclined plane and ball in the above image. If the ball rolls down the inclined plane in the direction of the arrow in 2.42 seconds, what is the average speed of the ball during the roll?

• 4.96 m/s
• 2.07 m/s
• 1.65 m/s

According to the above diagram, at what point would the roller coaster car have the greatest potential energy?

• 3
• 4
• 5
• 6