Work Auto Generated

Two factors that determine work are...

• Force

• Mass

• Velocity

• Distance

Work is done only if

• a force is applied.

• the force applied causes the object's motion.

• an object is in motion.

If you carry a 5 kg box across the room at a constant velocity

• you do no work.

• you do some work.

• you do negative work.

• Cannot be determined.

A 5 kg cat falls off a 3 m tall fridge. What is the cat's PE as it starts to fall?

• 15 J

• 30 J

• 150 J

• 1470 J

How much power was generated from 0-4 seconds?

• 1100 W

• 4 W

• 267 W

• 1600 W

A ramp is an example of a(n)

• inclined plane
• fulcrum
• force
• lever

If it took 9 seconds for the object to move 6 meters, what's the power?

• 81 W

• 27 W

• 3 W

• 6 W

On a work vs time graph, you can calculate the power by

• the area.

• the y-axis.

• the y-intercept.

• the slope.

A lever turns back and forth on a

• effort
• load
• work
• fulcrum

To increase the mechanical advantage of a lever

• make sure the fulcrum is in the middle of the lever
• move the fulcrum closer to the load
• move the fulcrum closer to the effort
• use a bigger fulcrum