## Work, Power, Energy, and Simple Machines Unit Assessment

Take our work, power, energy, and simple machines unit assessment quizzes. Follow links back to lessons for support your weakest assessment.

### Work and Power Quiz

Work and Power Quiz

Do you know your work and power? Take out quiz to find out

1 / 9

What is the unit of energy?

2 / 9

What is the unit of power?

3 / 9

What is the unit of work?

4 / 9

What is the power output when it takes a force of 50N forward is applied to move a box 6 meters in the same direction in 6 seconds?

5 / 9

How much work is done when a force of 50N forward is applied to move a box 6 meters in the same direction?

6 / 9

How much work would you have done if you pushed on a 2100 kg car with a force of 210N that did not move?

7 / 9

A student lifts a physics book applying a force equal to is 10N weight a distance of 3m up. How much work did the student do on the book?

8 / 9

How much work would a 75 kg student do to climb up a ladder 9 meters?

9 / 9

Sergio pushed a box with 50 Newtons of force forward.  When it did not move he pushed the box even harder with 100 Newtons of force but the box still did not move.  When did Sergio do more work?

0%

### Mechanical Energy Quiz

19

Mechanical Energy Quiz

Do you know your mechanical energy? Take our quiz to find out

1 / 14

What happens to kinetic energy as an object falls under ideal conditions?

2 / 14

What happens to potential energy as an object falls under ideal conditions?

3 / 14

What happens to mechanical energy as an object falls under ideal conditions?

4 / 14

Potential energy is dependent on __________________.

5 / 14

Kinetic energy is dependent on __________________.

GPE = mgh or GPE = Fwh

You are given weight not mass so use this form:

GPE = mgh = (50)(3.5) = 175 J

6 / 14

How much potential energy is in a  50kg boulder 3.5m off the ground?

7 / 14

How much potential energy does a 568 N ballerina have when she leaped 0.35 meters off the ground?

8 / 14

How much more potential energy do you have when an object is five times higher?

9 / 14

Mechanical Energy is composed of ____________.

10 / 14

When energy is lost from the system its lost as _______________.

11 / 14

How much kinetic energy does a 30 kg boar have when running 6 m/s?

12 / 14

How much does kinetic energy change when the velocity of an object doubles?

13 / 14

If a car has a mass of 750 kg, how much force is required to stop the car if it was traveling 12.5 m/s and took 10 m to stop?

14 / 14

A pool ball is flung off of a 0.68 m high table and the ball hits the floor with a speed of 6.0 m/s.  How fast was the ball moving when it left the pool table?

0%

### Simple Machine Quiz

Simple Machines Quiz

Do you know your simple machines? Take our quiz to find out

1 / 14

Simple machines can't be used to multiply _________________.

2 / 14

When energy is lost from a simple machine which of the following must be less

3 / 14

When energy is lost from a system it is most likely ________________.

4 / 14

Which is a simple machine consisting of a bar or plank that turns around a pivot point?

5 / 14 The picture above is of a(n) ___________________.

6 / 14

John pushes a box up a ramp using a 10 m plank.  The box moves a vertical distance of 2 m and weighs 500 N, ideally with how much force must he push?

7 / 14

A 460 N box is hoisted above a truck by John who applies 60 N of force.  What is the actual mechanical advantage of the pulley system?

8 / 14

A 460 N box is hoisted above a truck by John who applies 60 N of force.  What is the actual mechanical advantage of the pulley system?

9 / 14

Joe is attempting to lift a 3000 N motorcycle into a trailer 1.5 meters off the ground using a pulley system.  If Joe applies 300 N of force, what is the ideal distance he would pull on his side of the rope?

10 / 14

What is the Actual Mechanical Advantage when 300 N of force is required to lift a 3000 N object?

11 / 14

What length of ramp would you ideally have to use to raise an 815 N box a height of 2.10 m using a force of 165 N?

12 / 14

What is the ideal mechanical advantage when a ramp of 4 meters is used to lift a 1400 N sled full of toys 1 meter off the ground pushing with a force of 500 N?

13 / 14

What is the efficiency of 4 meters ramp used to lift a 1400 N sled full of toys 1 meter off the ground pushing with a force of 500 N?

14 / 14

Tom pushes a 50 kg box up a 15 meter incline plane by pushing with a force of 100 N.  The end result is that the box was lifted 2 meters.  What was the efficiency of this simple machine?