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WorksheetsIPC Semester Exam Review Unit 1
Total questions: 21
Worksheet time: 11mins
Name
Class
Date
1.
Which of the following is the best definition of work?
a)
something that happens when a force is applied to an object and the object moves
b)
the amount of force that you apply to an object
c)
the distance over which an object travels with time
d)
none of these
2.
Which of the following equations is used to calculate work?
a)
work=force X distance
b)
work=force/distance
c)
work=force - distance
d)
none of these
3.
A box is moved 2 meters using 100 N of force. How much work is done on the box?
a)
98N
b)
200 Nm
c)
50 Nm
d)
None of these
4.
Which equation is used to calculate power?
a)
power=work/time
b)
power=force/distance
c)
power=time X force
d)
None of these
5.
If you do 200 joules of work in 100 seconds, what is your power?
a)
100 J
b)
2 J/s
c)
20 J/s
d)
None of these
6.
Which of the following is an expression of power?
a)
J/s
b)
N
c)
Nm
d)
None of these
7.
Because simple machines are so basic, they do very little good in modern days and are not able to make work easier
a)
True
b)
False
8.
A screw is an inclined plane wrapped around a cylinder.
a)
True
b)
False
9.
Simple machines are divided into two main categories. Levers and inclined planes
a)
True
b)
False
10.
If a machine gives you a mechanical advantage of 4 and the input force is 10, what is the force output?
a)
6 N
b)
2.5 N
c)
40 N
d)
None of these
11.
Which equation correctly describes mechanical advantage?
a)
MA=input force-output force
b)
MA=output force/1
c)
MA=output force/input force
d)
None of these
12.
What is the mechanical advantage of a machine that requires an input force of 50 N and gives you an output force of 100 N?
a)
50
b)
2
c)
150
d)
None of these
13.
Which of the following is an example of a third-class lever?
a)
rake
b)
nutcracker
c)
seesaw
d)
None of these
14.
Which of the following simple machines is categorized with the levers?
a)
wheel and axle
b)
wedge
c)
inclined plane
d)
None of these
15.
Scissors are an example of which type of simple machine?
a)
pulley
b)
wheel and axle
c)
lever
d)
None of these
16.
Which of the following describes what happens to force as you increase distance (length) of a ramp while the amount of work remains the same?
a)
force will stay the same
b)
force will increase
c)
force will decrease
d)
None of these
17.
Which of the following describes what needs to occur in order to reduce force while doing the same amount of work?
a)
the distance over which the force is exerted must increase
b)
the distance over which the force is exerted must decrease
c)
the mass of the object being moved must be increased
d)
None of these
18.
When a mover uses a ramp to move a heavy object, which of the following are they doing in order to make work easier?
a)
increasing the force
b)
increasing the distance
c)
increasing the mass
d)
None of these
19.
Muscles and bones in your arms and legs work like which simple machine?
a)
pulley
b)
lever
c)
inclined plane
d)
None of these
20.
A bicycle is an example of a
a)
simple machine
b)
compound machine
c)
form of technology NOT classified as a machine
d)
None of these
21.
A compound machine is one that
a)
contains two or more simple machines
b)
makes work harder instead of easier
c)
has no simple machines in it
d)
None of these
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