NEW
Font size
S
M
L
XL
WorksheetsWork and Power
Total questions: 25
Worksheet time: 25mins
Name
Class
Date
1.
The unit used to measure work is the
a)
Watt
b)
Newton
c)
Joule
d)
meter
2.
A force exerted over a distance to move an object is ______________________.
a)
power
b)
work
c)
momentum
d)
Watt
3.
Which of the following is the best example of work being done.
a)
doing homework
b)
lifting a box
c)
pushing a stationary box
d)
holding a box
4.
A 5000N block is lifted 10 m. How much work was done?
a)
50000 J
b)
5000 J
c)
500 J
d)
50 J
5.
Force is a _____ or _______
a)
simple complex
b)
push pull
c)
up down
d)
in out
6.
In which of these cases is work being done?
a)
A student sleeps
b)
A student pushes a locked door that does not move
c)
a student carries his chair into another room
d)
A student sits on the carpet
7.
What is the unit for mass?
a)
Kilogram (Kg)
b)
Newton (N)
c)
Joule (J)
d)
Watt (W)
8.
How far does a car that weighs 5,000 N go if 18,000 J of work is done on it?
a)
3.8 m
b)
3.7 m
c)
3.2 m
d)
3.6 m
9.
How much work is done in holding a 15 N sack of potatoes while waiting in line at the grocery store for 3 minutes?
a)
15 J
b)
45 J
c)
0 J
d)
5 J
10.
The amount of work done in a certain amount of time is known as
a)
work
b)
effort force
c)
resistance force
d)
power
11.
How much power is the tractor that drags a plow with a force of 500 N a distance of 10 meters in 20 seconds?
a)
250 Watts
b)
250 Joules
c)
100,000 Watts
d)
100,000 Joules
12.
The more POWER you use to move an object, the more work you do.
a)
True
b)
False
13.
Work done = Force x _________
a)
a. distance
b)
b. acceleration
c)
c. velocity
d)
d. speed
14.
If a group of workers can apply a force of 1,000 Newtons to move a crate 20 meters, what amount of work will they have accomplished?
a)
20,000 J
b)
200 J
c)
2,000 J
d)
20 J
15.
If 68 W of power is produced in 18 seconds, how much work is done?
a)
1,224 J
b)
0.264 J
c)
3.77 J
d)
12.24 J
16.
How much time is needed to produce 720 Joules of work if 90 watts of power is used?
a)
0.125 s
b)
8 s
c)
64800 s
d)
80 s
17.
If 68 Joules were necessary to move a 4 Newton crate, how far was the crate moved?
a)
272 m
b)
17 m
c)
4.05 m
d)
272 cm
18.
What is the equation for power?
a)
P = Work/time
b)
P = Force/time
c)
P = time/distance
d)
P = Work * time
19.
What is the equation for work?
a)
W = mass * acceleration
b)
W = force * distance
c)
W = force/distance
d)
W = speed/time
20.
P=25 watts
W=5000 Joules
t=???
W=5000 Joules
t=???
a)
200 sec
b)
0.0005 s
c)
125000 s
d)
125 s
21.
The unit used to measure power is the
a)
Watt
b)
Newton
c)
Joule
d)
Newton*meter
22.
True or false: when the distance an object moves is zero the work done on the object is also zero.
a)
True
b)
False
23.
What is the potential energy done in lifting a 50kg barbell 5.8m above the floor?
a)
50J
b)
9.81J
c)
2845J
d)
58J
24.
How much work is done on a vacuum cleaner pulled 3m by a force of 50N at an angle of 30-degrees above the horizontal?
a)
50J
b)
80J
c)
130J
d)
240J
25.
Power is defined as the quantity that measures the rate at which _____ is done or energy is transformed.
a)
energy
b)
time
c)
work
d)
elasticity
Reset
