WorksheetsForces Unit Review
Total questions: 37
Worksheet time: 1hrs 20mins
When you slide a box across the floor what force must your push be stronger than?
a. support force
b. friction force
c. gravity
d. air resistance
Why is it more difficult for the boy in image B to go down the hill?
Motion
Friction
Work
Displacement
If these children are pulling with the same amount of force, what will happen?
The child in blue will win.
The children will not move.
The child in red will win.
What is the net force acting on the block?
5 Newtons up
5 Newtons down
15 Newtons up
15 Newtons down
Which of the following is an example of a non-contact force?
gravity
air resistance
friction
applied force
A cup is forgotten on the roof of a car. When the car begins to move, the cup does not move forward with the car. Instead, it falls off the roof. Why?
The cup accelerated backward as the car accelerated forward, so the cup fell off the car.
An unbalanced force caused the cup to move with the car, but gravity caused it to fall.
The upward force on the cup increased as the car moved forward, so the cup fell.
Inertia kept the cup from moving while the car moved forward.
What happens when two forces act in the same direction?
The forces cancel out.
The larger force prevails.
The two forces add together.
Their sum divided by the two forces equals the total force.
Newton’s First Law of Motion states:
That force, mass, and acceleration are related,
f=ma
An object at rest or in motion will remain at rest/ in motion unless acted upon by a unbalanced force.
The acceleration of a falling object is due to the force of gravity.
For every action there is an equal and opposite reaction.
While riding a bicycle, the front tire hits a curb and the rider flies over the handlebars. This is an example of _____.
Newton's first law
Newton's second law
Newton's third law
Newton's fourth law
Is the force of gravity stronger on Earth or on the Moon?
The Earth
The Moon
Not enough information provided to make a determination.
The image shows an example of Newton's _____.
first law of motion
second law of motion
third law of motion
fourth law of motion
The SI unit used to measure force is the _____.
Newton
joule
candela
gram
More force is required to accelerate Iron Man (on the left) than mini Iron Man (on the right) because the Iron Man on the left has more mass. This best describes _____.
Newton's first law, the law of inertia
Newton's second law, the law of force, mass, and acceleration
Newton's third law, the law of action reaction
The law of universal gravitation
This equation shown in the image best describes _____.
Newton's first law of motion
Newton's second law of motion
Newton's third law of motion
Newton's fourth law of motion
When two equal forces act in opposite directions on an object, they are referred to as a _____.
frictional force
balanced force
centripetal force
gravitational force
Gravity attracts all objects towards one another.
True
False
A ____________ can be described as a push or a pull on an object.
friction
force
mass
gravity
Is the sum of the forces shown in the image balanced or unbalanced?
balanced
unbalanced
Not enough information provided to make a determination.
If an object is at rest, the forces acting upon it are _____.
unbalanced
weak
balanced
Hulk Smash!
Select all choices which are correct. Forces _____.
can be described as a push or a pull.
always act in pairs.
are measured in Newtons.
All are correct
Which combination results in a balanced net force?
<--10 N
15 N--->
5 N -->
<--3 N
<--3 N
6 N -->
10 N-->
<--15 N
<-- 5 N
12 N -->
12 N -->
<--22 N
The reason forces act in pairs is explained by Newton’s _____.
first law of motion.
second law of motion.
third law of motion.
Universal Law of Gravity.
A horse pulls with a force of 130 N, and accelerates at 0.8 m/s2. What is the horse's mass?
162.5 N
104 N
104 kg
162.5 kg
Which object possesses the most inertia?
6 kg
8 kg
12 kg
10 kg
What is another name for Newton's First Law?
The Law of Action-Reaction
The Law of Inertia
f=ma
The Law of Universal Gravitation
The same force pushes on four different cups, A - D. The average distance each cup moved is:
A = 109 cm B = 103 cm
C = 94 cm D = 89 cm
Which cup has the most mass?
A
B
C
D
What force is keeping the female skater moving in a circle instead of flying off in a straight line?
Acceleration
Centripetal
Magnetic
Air Resistance
One application of the Pythagorean theorem is to ____.
determine the net force of two forces intersecting at right angles to one another.
find the angle theta.
find the length of the adjacent side.
Confuse and disorient 8th grade math.
The mnemonic SOH CAH TOA is used to _____.
determine the net force of two forces intersecting at right angles.
determine the angle (theta).
determine the length of the opposite side of a right triangle.
a popular greeting among mathematicians and physicists.
Two forces push on an object at a right angle. What is the net force?
10.1 N
40.0 N
31.5 N
29.3 N
What is the letter commonly used in equations to represent the concept of momentum?
m
p
v
s
What type of collision is shown?
Elastic
Inelastic
Plastic
Scrunchy
A ball on a string is swung in a circle above your head. In what direction will the ball travel when released?
A
B
C
D
In the SI system of measurement for force, one Newton equals _____.
1 Kg
1 Kg• m/sec
1 kg• m/sec2
1 pound•m/sec2
