Lab: Kinetic Energy

Question 1

Which objects are inclined planes? Select three options.

Revolt · Accepted Answer

a staircase; a wheelchair ramp; a slide

Question 2

Which simple machine is the lid of a jar?

Revolt · Accepted Answer

a screw

Question 3

Which simple machine is a doorknob?

Revolt · Accepted Answer

a wheel and axle

Question 4

Trisha works for a roofing company and needs to move shingles from the ground to the roof.What simple machine would help her move the shingles?

Revolt · Accepted Answer

An inclined plane would have to be too long, and a lever would be impractical. Pulleys are best used to raise objects.

Question 5

What did you include in your response? Check all that apply.

Revolt · Accepted Answer

A pulley is used to hoist or raise objects.; Other simple machines, such as an inclined plane or lever, would be impractical.

Question 6

What is a combination of two or more simple machines?

Revolt · Accepted Answer

a compound machine

Question 7

Which ramp requires the least amount of force?

Revolt · Accepted Answer

[Image: A man pushes a ball on a ramp with an arrow after ...]

Lab: Kinetic Energy Answers