Unit 4 - Intro

Which of the following is an example of wheel and axle?

• Fan

• Seesaw

• Screw

• Ramp

The fulcrum is associated with which simple machine?

• Lever

• Screw

• Wheel and Axle

• Pulley

Which of the following splits two things?

• wedge

• screw

• inclined plane

• wheel and axle

What is the disadvantage of a screw?

• takes more turns

• takes less turns

• takes less force

• takes more force

A baseball bat is which simple machine?

• Lever

• Screw

• inclined plane

• Pulley

Kinetic energy is energy due to motion.

• True

• False

Which of the following has potential energy?

• H₂O

• Windmill

• Fan

• An apple falling from tree

To lift a heavier load, you must move the fulcrum

• closer to the heavier object

• farther from the heavier object

• closer to the lighter object

Mechanical advantage above 1 means

• output > input

• output < input

• output = input

How much work was done on an object with a force of 10 N over a distance of 10 m?

• 100 J

• 100 N

• 1 J

• 1 N