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WorksheetsForces Unit Review
Total questions: 21
Worksheet time: 9mins
Name
Class
Date
1.
Forces
a)
are a push or a pull
b)
act in pairs
c)
are measured in Newtons
d)
All are correct
2.
This force diagram shows
a)
A balanced force
b)
an unbalanced force right
c)
An acceleration left
d)
A net force of 20 N
3.
Which is showing a balanced force?
a)
<--10 N
15 N--->
5 N -->
15 N--->
5 N -->
b)
<--3 N
<--3 N
6 N -->
<--3 N
6 N -->
c)
10 N-->
<--15 N
<-- 5 N
<--15 N
<-- 5 N
d)
12 N -->
12 N -->
<--22 N
12 N -->
<--22 N
4.
Newton’s First Law of Motion states:
a)
That force, mass, and acceleration are related:
F = M x A
F = M x A
b)
An object at rest/in motion will remain at rest/ in motion unless acted upon by a unbalanced force.
c)
The acceleration of a falling object is due to the force of gravity.
d)
For every action there is an equal but opposite reaction.
5.
Why forces act in pairs is explained by Newton’s
a)
1st Law
b)
2nd Law
c)
3rd Law
d)
Universal Law of Gravity
6.
A horse is pulling with a force of 130 N and is moving 0.8 m/s. What is the mass of the horse?
a)
162.5 N
b)
104 N
c)
104 kg
d)
162.5 kg
7.
Big toe hits chair, chair hits big toe is an example of
a)
Newton's first law
b)
Newton's second law
c)
Newton's third law
d)
Murphy's Law
8.
When riding on a bike, the front tire hits the curb and the rider flies over the handlebars.
a)
Newton's first law
b)
Newton's second law
c)
Newton's third law
9.
Which object has the most inertia?
a)
6 kg
b)
8 kg
c)
12 kg
d)
10 kg
10.
What is another name for the Newton's First Law?
a)
Action / Reaction
b)
Law of Inertia
c)
F = MA
d)
g forces
11.
The same force pushed 4 different cups, A - D. The average distance each moved is:
A = 109 cm B = 103 cm
C = 94 cm D = 89 cm
Which cup has the most MASS?
A = 109 cm B = 103 cm
C = 94 cm D = 89 cm
Which cup has the most MASS?
a)
A
b)
B
c)
C
d)
D
12.
What is the net force?
a)
15 left
b)
15 right
c)
9 up
d)
0
13.
Look at the couple skating in a circle. What force is keeping the woman skater moving in a circle instead of flying off in a straight line?
a)
Acceleration
b)
Centripetal
c)
Magnetic
d)
Air Resistance
14.
What is the acceleration of the force diagram below?
a)
A = 11 N/ kg
b)
A = .8 N/ kg
c)
A = 0.5 N/ kg
d)
A = 1 N/ kg
15.
The Pythagorean theorem is used to
a)
find the net force of 2 forces hitting at right angles.
b)
find the angle theta.
c)
find the length of the adjacent side.
d)
Confuse and disorient 8th grade math.
16.
2 forces are pushing on an object at a right angle shown below. Find the net force.
a)
10.1 N
b)
40.0 N
c)
31.5 N
d)
29.3 N
17.
What is the letter abbreviation used for the word Momentum?
a)
m
b)
p
c)
t
d)
n
18.
What kind of collision is this?
a)
Elastic
b)
Inelastic
c)
Plastic
d)
None are true
19.
If something is swinging above your head (dot) which way would the object fly if you let it go?
a)
A
b)
B
c)
C
d)
D
20.
Inertia is
a)
the inward force when something spins
b)
the amount of mass x the velocity
c)
Any object that speeds up, slows down, or turns
d)
How difficult it is to accelerate something because of mass
21.
One newton equals
a)
1 Kg
b)
1 Kg• m/sec
c)
1 kg• m/sec2
d)
1 pound•m/sec2
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