Work and Power

Presentation

•

Physics

•

11th Grade

•

Practice Problem

•

Medium

•

NGSS

HS-PS3-1, HS-PS3-2

Standards-aligned

Leslie Dunham

Used 58+ times

FREE Resource

10 Slides • 10 Questions

Work and Power

Some text here about the topic of discussion.

Energy Review

Remember that mechanical energy is conserved

Total energy = potential energy + kinetic energy

Some text here about the topic of discussion

Multiple Choice

What is the total mechanical energy for the position of the ball indicated by the blue circle?

0 J

50 J

100 J

Multiple Choice

What is the total mechanical energy that the ball would have when it is in the position indicated by the blue circle?

0 J

50 J

100 J

Multiple Choice

How much kinetic energy would the ball have at the position indicated by the blue circle?

0 J

50 J

100 J

Multiple Choice

If the ball has a mass of 4kg, what would be the velocity of the ball at the position indicated by the blue circle?

$KE\ =\ \frac{1}{2}mv^2$

0 m/s

5 m/s

25 m/s

Both are measured in JOULES

Energy is the ability to do work and work causes a change in energy

ex. If you do 30 J of work on an object, its energy will change by 30 J

Work - how much the position of an object is changed by a force

Some text here about the topic of discussion.

In order to do work, the object must MOVE in the same direction as the force

Multiple Choice

Your car is stuck in the mud. You push with 500 N of force but it never moves. How much work did you do?

0 J

500 J

500 N

0 N

Match

Match the variables with the correct answer.

W = F x d

F = 20 N

d = 5 m

W = 15 J

d = 5 m

W = 20 J

F = 2 N

F = 8 N

d = 4 m

100 J

3 N

10 m

32 J

Power is the rate at which work is done

AKA - The change in energy over time

The faster the work is done, the more power

The equations for work and power can be combined to simplify problem solving.

Since W = Fd and P = W/t,

We can say that P = Fd/t

Multiple Choice

You do 90 joules of work in 30 seconds. How much power have you generated?

30 watts

3 watts

120 watts

270 watts

Multiple Choice

If 68 W of power is produced in 18 seconds, how much work is done?

1,224 J

0.264 J

3.77 J

12.24 J

Multiple Choice

How much time is needed to produce 720 Joules of work if 90 watts of power is used?

0.125 s

8 s

64800 s

80 s

Multiple Choice

A 100 N force is applied to move an object a horizontal distance of 5 meters at constant speed in 10 seconds. How much power is done?

50J

50W

500J

500W

Work and Power

Some text here about the topic of discussion.

Show answer

Auto Play

Slide 1 / 20

SLIDE

Similar Resources on Wayground

18 questions

2.2.3 Uniform Circular Motion

Presentation

•

10th - 12th Grade

15 questions

Monday 2/5 Check In

Presentation

•

11th Grade

17 questions

Lesson P.5A & C- Electrostatic Force

Presentation

•

11th Grade

13 questions

Inclined Planes

Presentation

•

10th - 11th Grade

16 questions

The Theory of Evolution

Presentation

•

8th Grade

14 questions

PERGESERAN / TRANSLASI

Presentation

•

11th Grade

13 questions

Position Paper

Presentation

•

11th Grade

17 questions

Significant Figures

Presentation

•

11th Grade

Popular Resources on Wayground

24 questions

PBIS-HGMS Day 10

Quiz

•

6th - 8th Grade

10 questions

HCS SCI 03 Summer School Review 3

Quiz

•

3rd Grade

11 questions

Home Scope

Quiz

•

7th - 8th Grade

15 questions

HCS SCI 05 Summer School Assessment 3 Review

Quiz

•

5th Grade

35 questions

Lufkin Road Middle School Student Handbook & Policies Assessment

Quiz

•

7th Grade

18 questions

Geo 11.3 Area of Circles and Sectors

Quiz

•

9th - 11th Grade

Discover more resources for Physics

18 questions

Geo 11.3 Area of Circles and Sectors

Quiz

•

9th - 11th Grade