WorksheetsWork, Power, and Simple Machines
Total questions: 24
Worksheet time: 1hrs 18mins
Name
Class
Date
1.
What is the unit used to measure Power?
a)
Joule
b)
Watt
c)
Newton
d)
Pascal
2.
Force X Distance = _______?
a)
Work
b)
Power
c)
Energy
d)
Force
3.
Which two factors affect the gravitational attraction between two objects?
a)
Density and Friction
b)
Mass and Distance
c)
Density and Distance
d)
Mass and Friction
4.
Which example shows an unbalanced force?
a)
A pencil sitting on a desk
b)
a car parked in a parking lot
c)
a coat laying on the floor
d)
a child sliding down a slide
5.
Which of these is an example of a balanced force?
a)
A book sitting on a chair
b)
a ball rolling down the road
c)
a fish swimming in its bowl
d)
a plate sitting in the sink
6.
Distance/Time = __________?
a)
Speed
b)
Force
c)
Work
d)
Power
7.
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
8.
Where should the fulcrum be placed in order for the student to use the least amount of effort possible?
a)
point A
b)
point B
c)
point C
d)
point D
9.
Your mass increases as you grow. How does this affect the force of gravitational attraction between you and other objects?
a)
the force decreases
b)
the force increases
c)
the force stays the same
d)
the force does not change without a change in distance.
10.
A _____ is a fixed bar that us free to move around a fixed point known as a fulcrum.
a)
pulley
b)
inclined plane
c)
lever
11.
If you use a crowbar to get the lid off of a bucket, what simple machine are you using?
a)
Inclined Plane
b)
Pulley
c)
Wheel and Axle
d)
Lever
12.
What type of simple machine is found on the cap of a pickle jar?
a)
lever
b)
inclined plane
c)
pulley
d)
screw
13.
What is the unit used to measure work?
a)
Joule
b)
Watt
c)
Newton
d)
Pascal
14.
Which of these is an example of a wedge?
a)
skateboard
b)
broom
c)
stairs
d)
butter knife
15.
A fishing pole is an example of a compound machine. What simple machines are used to make up this compound machine?
a)
lever, wheel and axle, pulley
b)
wheel and axle, inclined plane, pulley
c)
wheel and axle, pulley, inclined plane
16.
Consists of two circular objects; a central shaft and a wheel.
a)
wheel and axle
b)
screw
c)
pulley
17.
Work/Time = ________?
a)
Force
b)
Speed
c)
Velocity
d)
Power
18.
Wheels on a skateboard most likely experiences-
a)
Rolling Friction
b)
Sliding Friction
c)
Fluid Friction
d)
Static Friction
19.
Calculate the amount of work done if you use a 100N force to push a 50 kg box 5 m across the kitchen floor.
a)
250 J
b)
500 J
c)
5000 J
d)
50,000 J
20.
Jeff is a landscaping contractor and lifts a rock weighing 600 pounds by wedging a board under the rock. Jeff weighs 150 pounds and puts all of his weight on the lever. How much mechanical advantage did the lever provide to Jeff in lifting the rock?
a)
0
b)
2
c)
4
d)
8
21.
Using a lever, Joe is able to lift a 10,000 N car off of the ground with a force of 1000 N. What is the mechanical advantage of the lever?
a)
1
b)
10
c)
100
d)
1000
22.
A 16 N force is applied to an object and 96 J of work is done. How far was the object moved?
a)
6 m
b)
16 m
c)
80 m
d)
1536 m
23.
An object at rest will _______ if no outside forces are applied.
a)
Stay at rest
b)
Increase Velocity
c)
Decrease Mass
24.
A watt is defined as ___________
a)
One joule per second
b)
One horsepower per second
c)
A force of one pound over a distance of one foot
d)
A force of one newton over a distance of one meter
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