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WorksheetsWork and machines
Total questions: 38
Worksheet time: 29mins
Name
Class
Date
1.
Which of these people does the most work?
a)
Someone applies a force of 10 newtons over 10 meters
b)
Someone applies a force of 5 newtons over 10 meters
c)
Someone applies a force of 10 newtons over 5 meters
d)
Someone applies a force of 20 newtons over 10 meters
2.
Distance/Time = __________?
a)
Speed
b)
Force
c)
Work
d)
Power
3.
Work/Time = ________?
a)
Force
b)
Speed
c)
Velocity
d)
Power
4.
What do all machines do?
a)
Build things
b)
Move something
c)
Change the direction or strength of a force
d)
Make life easier
5.
It takes 20 N of force to move a box a distance of 10 m. How much work is done on the box in Joules?
a)
200 J
b)
20.0J
c)
100 J
d)
10 J
6.
units for work are
a)
netwons
b)
joules
c)
meters
d)
seconds
7.
Work done = Force x blank?
a)
a. distance
b)
b. acceleration
c)
c. velocity
d)
d. speed
8.
What is the unit used to measure Power?
a)
Joule
b)
Watt
c)
Newton
d)
Pascal
9.
What type of simple machine is found on the cap of a pickle jar?
a)
lever
b)
inclined plane
c)
pulley
d)
screw
10.
Which of these is an example of a wedge?
a)
skateboard
b)
broom
c)
stairs
d)
butter knife
11.
Consists of two circular objects; a central shaft and a wheel.
a)
wheel and axle
b)
screw
c)
pulley
12.
A machine is a device that changes _____.
a)
Time used
b)
Input force used
c)
Distance
d)
A force
13.
What is a wedge?
a)
A combination of two or more simple machines that work together.
b)
A v shaped object whose sides are two inclined planes sloped toward each other
c)
A combination of two or more simple machines that work together.
14.
What is Newton's First Law
a)
F=ma
b)
Every action has an equal and opposite reaction
c)
An object at rest stays at rest, an object in motion stays in motion.
d)
Friction
15.
One object has twice as much mass as another object. The first object also has also twice as much...
a)
velocity
b)
gravitational acceleration
c)
inertia
d)
all of these
16.
What is the speed of an object that travels 20 meters in 4 seconds?
a)
80 m/s
b)
0.2 m/s
c)
5 m/s
d)
24 m/s
17.
What pulls a ball back to earth?
a)
Gas
b)
Gravity
c)
Friction
d)
Molecules
18.
What is the name for a push or pull?
a)
A movement
b)
A force
c)
Speed
d)
Density
19.
Which type of force(s) will cause a change in an object's motion?
a)
gravity
b)
zero net force
c)
balanced forces
d)
unbalanced forces
20.
What is Newton's First Law known as? The Law of
a)
Friction
b)
Mass
c)
Inertia
d)
Gravity
21.
For every action there is an equal and opposite reaction.
a)
inertia
b)
velocity
c)
Newton's Third Law
d)
force
22.
Acceleration is produced when a force acts on a mass.
a)
Newton's Second Law
b)
speed
c)
Newton's First Law
d)
friction
23.
The rocket pushes gases downward. The gases push the rock upward.
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
24.
An object at rest will stay at rest unless acted upon by a force.
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
25.
The greater the mass, the greater the amount of force needed for a given acceleration, which law is represented here?
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
26.
Which law is also known as the Law of Inertia?
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
27.
It requires MORE force to push a car than a lawn mower.
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
28.
When a horse suddenly stops, the rider flies over the horses head.
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
29.
When you paddle BACKWARDS on a canoe, the canoe goes FORWARD.
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
30.
What is the tendency of an object to resist a change in motion?
a)
coffee
b)
motion
c)
inertia
d)
gravity
31.
What is Newton's First Law known as? The Law of
a)
Friction
b)
Mass
c)
Inertia
d)
Gravity
32.
What is the net force of this object?
a)
10 N, no direction
b)
10 N left
c)
5 N right
d)
0 N no direction
33.
What famous scientist was the SI units of Force named after?
a)
Isaac Newton
b)
Galileo Galilei
c)
Albert Einstein
d)
Charles Darwin
34.
Why is the net force 0 in the image?
a)
Because the elephants are the same size
b)
Because they are both pulling the same amount of force in opposite directions
c)
Because they are elephants
d)
Because they are pulling away from each other.
35.
A unbalanced force means that an object is
a)
zero net force
b)
in motion
c)
sitting still
d)
object at rest
36.
Two balls that collide will have an equal but opposite force upon one another
a)
First Law
b)
Second Law
c)
Third Law
d)
Law of Inertia
37.
A hammer puts force on a nail, and the nail
a)
puts force into the wall
b)
the nail puts a greater force back on the hammer
c)
the nail puts a lesser force on the hammer
d)
puts and equal and opposite force on the hammer
38.
Which law explains why you need to wear a seat belt?
a)
First
b)
Second
c)
Third
d)
Gravity
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