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WorksheetsPhysics First Review - Work and Power
Total questions: 22
Worksheet time: 47mins
Name
Class
Date
1.
The SI Unit for mass?
a)
Kilogram (Kg)
b)
Newton (N)
c)
Joule (J)
d)
Watt (W)
2.
The SI Unit for work
a)
Newton (N)
b)
Joule (J) and the Newton-meter
c)
Second (s)
d)
Watt (W)
3.
The SI Unit for force
a)
Newton (N)
b)
Joule (J)
c)
Second (s)
d)
Watt (W)
4.
The SI Unit for Time
a)
Newton (N)
b)
Joule (J)
c)
Second (s)
d)
Watt (W)
5.
The SI Unit for Power
a)
Newton (N)
b)
Joule (J)
c)
Second (s)
d)
Watt (W)
6.
What is the formula for Work?
a)
E=mc2
b)
W= F x d
c)
P = W/T
7.
What is the formula for Power?
a)
E=mc2
b)
W= F x d
c)
P = W/T
8.
F=200 N
d=50 m
w=??
d=50 m
w=??
a)
4 J
b)
0.25 J
c)
250 J
d)
10,000 J
9.
If 150 Joules of work is needed to move a box 10 meters, what force was used?
a)
1500 N
b)
15 N
c)
1.5 N
d)
150 N
10.
Find the distance an object traveled if a force of 350 N acted on it to produce 0 work?
a)
3 m
b)
2 m
c)
1 m
d)
0 m
11.
An Xbox consumes 15.7 watts while in standby mode. If you leave it in standby mode for 86,400 seconds (one day), how much work was done?
a)
1,356,490 J
b)
1,356,480 J
c)
1,356,470 J
d)
1,356,460 J
12.
How far does a car that weighs 5,000 N move if 18,000 J of work are done on it?
a)
3.8 m
b)
3.7 m
c)
3.2 m
d)
3.6 m
13.
W = 500 Joules
t = 25 seconds
P = ???
t = 25 seconds
P = ???
a)
0.05 W
b)
20 W
c)
12500 W
d)
2000 W
14.
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
15.
A person weighing 600 N gets on an elevator. The elevator lifts the person 6 m in 10 seconds. How much power was used?
a)
360 W
b)
60 W
c)
3600 W
d)
600 W
16.
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
17.
A 5000N block is lifted 10 m. How much work was done?
a)
50000 J
b)
5000 J
c)
500 J
d)
50 J
18.
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
19.
How much power is the tractor using if it 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
20.
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
21.
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
22.
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
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