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Work and Energy Practice

Total questions: 13

Worksheet time: 7mins

Name
Class
Date
1.

A skateboarder of mass M initially moves with velocity V on a horizontal path. The skateboarder travels a distance D as she slows to a stop. Assume friction is constant. What variable(s) would you need to calculate Kinetic Energy?

a)

Mass

b)

Velocity

c)

Height

d)

Potential Energy

2.

A new skateboarder of mass M initially moves with velocity 4V on a horizontal path. The skateboarder travels a new distance as she slows to a stop. Assume friction is constant. How does this new distance compare to a skateboarder with velocity V?

a)

2D

b)

4D

c)

8D

d)

16D

3.

A new skateboarder of mass M initially moves with velocity V on a horizontal path. The skateboarder travels a new distance as she slows to a stop because friction is now doubled. How does this new distance compare to when we have friction F?

a)

1/2D

b)

D

c)

2D

d)

4D

4.

A new skateboarder of mass 4M initially moves with velocity V on a horizontal path. The skateboarder travels a new distance as she slows to a stop. Assume friction is constant. How does this new distance compare to a skateboarder with mass M?

a)

1/4D

b)

1/2D

c)

D

d)

4D

5.

A new skateboarder of mass 2M initially moves with velocity 4V on a horizontal path. The skateboarder travels a new distance as she slows to a stop because friction is halved. How does this new distance compare to the original skateboarder (Mass M, velocity V, friction F)?

a)

2D

b)

8D

c)

16D

d)

32D

6.

A student pushes a table across the floor. There is a force of friction constantly at 5 N. What is happening to the motion of the object between 35-40m?

a)

Speeding Up

b)

Slowing Down

c)

Constant Speed

d)

Turns around and slaps the student

7.

A student pushes a table across the floor. There is a force of friction constantly at 5 N. What is happening to the motion of the object between 0-5m?

a)

Speeding Up

b)

Slowing Down

c)

Constant Speed

d)

Absolutely Nothing... for sure

8.

A student pushes a table across the floor. There is a force of friction constantly at 5 N. What is happening to the motion of the object between 5-35m?

a)

Speeding Up

b)

Slowing Down

c)

Constant Speed

d)

Literally Everything

9.

A student pushes a table across the floor. There is a force of friction constantly at 5 N. At what point do you have the highest speed?

a)

5 m

b)

10 m

c)

30 m

d)

35 m

e)

None of the above

10.

What is the amount of work done between 0-4 m?

a)

40 J

b)

30 J

c)

60 J

d)

No clue...

11.

What is the work done for the whole graph?

a)

240 J

b)

120 J

c)

360 J

d)

4 million J

12.

What is the total change of kinetic energy for this graph?

a)

100 J

b)

200 J

c)

300 J

d)

400 J

13.

If I wanted to find the velocity of the object whose motion is depicted in this graph, what other variable(s) would I need?

a)

None

b)

Potential Energy

c)

Work

d)

Mass