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Work and Kinetic Energy

Total questions: 28

Worksheet time: 21mins

Name
Class
Date
1.
The faster an object moves, the ________ kinetic energy it has. 
a)
more
b)
less
c)
none of the above
d)
all of the above 
2.
What would have the greatest kinetic energy?
a)
A car driving down a hill.
b)
A person running down a hill. 
c)
A ball rolling down a hill. 
3.
Which is the best example that something has kinetic energy?
a)
a. a car parked on a steep hill 
b)
b. a tennis ball rolling across the court
c)
c. a picture hanging on the wall 
d)
d. a piece of coal before it's burned 
4.
What is kinetic energy?
a)
energy of work
b)
energy of motion
c)
energy of gravity
d)
energy of power
5.
The SI unit in which kinetic energy is measured is 
a)
Newton
b)
Kilogram
c)
Joules
d)
Metres per second
6.
Calculate the kinetic energy of a moving 4 kg object travelling at a velocity of 3 m/s.
a)
18 J
b)
36 J
c)
12 J
d)
6 J
7.

What is the kinetic energy of a ball with a mass of 5kg rolling at 10m/s

a)

50 J

b)

500 J

c)

250 J

d)

25 J

8.
A 60 kg Ewok is travelling at a constant speed of 7 m/s. What is its kinetic energy in KJ?
a)
1.47 KJ
b)
210 KJ
c)
147 KJ
d)
1470 KJ
9.

Two factors that determine work are

a)

force

b)

acceleration

c)

mass

d)

distance

e)

velocity

10.

True or false

You do work when you mannequin pose with an object in your hand.

a)

true

b)

false

11.

units of force are

a)

newtons

b)

grams

c)

joules

d)

meters

12.

units for work are

a)

newtons

b)

joules

c)

meters

d)

seconds

13.

if you push a cart with a force of 60 N for 2 m... how much work have you done

a)

120 J

b)

30 J

c)

120 N

d)

30 N

14.
work transfers
a)
sweat
b)
energy
c)
velocity
d)
effort
15.
What is the formula for work?
a)
Force = work x distance
b)
Distance = force x work
c)
Work = force x distance
d)
Work = force x mass
16.
Energy due to motion is ____________ energy. 
a)
Potential 
b)
Energy
c)
Kinetic
d)
Friction
17.
The faster an object moves, the ________ kinetic energy it has. 
a)
more
b)
less
c)
none of the above
d)
all of the above 
18.
Work of 2000 J is required to push an object 1.5 km. What is the force?
a)
2.5 N
b)
1.3 N
c)
1.6 N
d)
12 N
19.
An 80 N force has been applied to a block and move it 20 m at 30° along the direction of the force. How much work has been done to the block?
a)
1386 J
b)
1245 J
c)
3215 J
d)
1368 J
20.

Which of the following is defined as an energy transfer?

a)

kinetic energy

b)

work

c)

potential energy

d)

chemical energy

21.

The unit of work is

a)

watt

b)

hertz

c)

joule

d)

pascal

22.

Each of the boxes shown is pulled for 10 m across a level, frictionless floor by the force given. Which box experiences the greatest change in its kinetic energy?

a)

A

b)

B

c)

C

d)

D

e)

E

23.

Four students run up the stairs in the time shown. Which student has the largest power output?

a)

A

b)

B

c)

C

d)

D

24.

What is the unit for power?

a)

what

b)

watt

c)

joule

d)

Jewel-Osco

25.

Which requires more work – a person walking up stairs or a person running up stairs?

a)

walking

b)

running

c)

they require equal work

d)

no work is required for either because the movement is vertical

26.

Which requires more power – a person walking up stairs or a person running up stairs?

a)

walking

b)

running

c)

they require equal power output

d)

no power is required at all

27.

How much work is done on a 200-kg crate that is hoisted 2 m in a time of 4 s?

a)

400 J

b)

1000 J

c)

1600 J

d)

4000 J

28.

How much power is required to raise a 200-kg crate a vertical distance of 2 m in a time of 4 s?

a)

400 W

b)

1000 W

c)

1600 W

d)

4000 W

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