WorksheetsCh 3 Review Physics
Total questions: 50
Worksheet time: 34mins
If the mass of an object on Earth is 100 kg, then what is the weight of the object on the moon? The strength of the gravitational field on the Moon is about 1.6 m/s2 .
160 N
980 N
100 N
62.5 N
Your weight on the Moon would be greater than what it is on Earth.
TRUE
FALSE
If an astronaut weighs 148 N on the Moon and 893 N on Earth, then what is his mass? _____ kg
91
75
60
120
The mass of an object is the same on Earth and the moon.
TRUE
FALSE
Weight depends on (a) . Mass is the amount of (b) in an object.
Weight (c) if gravity changes.
Mass (d) if gravity changes.
What type of force opposes motion between surfaces in contact with one another?
friction
gravity
electrical
magnetic
If a 10.4 kg block is on a rough horizontal table with a coefficient of friction μ=0.15, then what is the resulting force of friction on the block?
15.3
10.2
5.8
20.1
If a 20 N block experiences a force of kinetic friction of 8.0 N from the surface of a table, then what is the coefficient of kinetic friction (μ_k) between the block and the table?
0.4
0.2
0.8
0.04
A force of 60 N is applied to a skier to pull him along a horizontal surface so that his speed remains constant. If the coefficient of friction of the skis on snow is 0.05, then what is the weight of the skier?
60 N
100 N
1200 N
600 N
If a 50 N block is resting on a steel table with a coefficient of static friction μ_s = 0.74, then what minimum force is required to move the block?
37
25
50
74
If force of 6.0 N causes a 1.0 kg block to accelerate 4.0 m/s2 to the right, then what is the force of friction acting on the block?
2
4
1
0
If a force of 6.0 N pushes on a 2.0 kg block causing it to accelerate at 3.0 m/s2 to the right, then what is the force of friction acting on the block?
0 N
12 N
6 N
18 N
If the wooden steps in your yard get slippery when wet, how could you make them less slippery?
polish them with grease
give the steps a rougher surface
use non-slip treads
cover them with paint that contains sand
If a boy weighs 490 N and stands on a flat rough surface with a coefficient of static friction μ_s=0.68, then what is the force of static friction acting on the boy?
507 N
333 N
If a car with a mass of 1,200 kg traveling westward at 30 m/s is slowed to a stop in 3 s, then what was the net force acting on the car? Take East to be positive and West to be negative.
-12,000 N
36,000 N
3600 N
12,000 N
Two cars with different masses travel at the same speed down a hill toward a stop sign. What will happen when both cars apply brakes at the same time to stop?
The car with the smaller mass will require less force to stop than the car with the larger mass.
The car with the larger mass will maintain its velocity while travelling down the hill.
The car with the smaller mass will take longer to stop than the car with the larger mass.
The car with the larger mass will have less inertia than the car with smaller mass.
What acceleration results from exerting a 25 N horizontal force on a 0.5 kg ball at rest?
(a)
If the net force on a baseball with a mass of 0.145 kg is 18.9 N, then what is the resulting acceleration of the baseball?
(a)
After a rocket ship going from Earth to the Moon leaves the gravitational pull of Earth, it can shut off its engine and the ship will continue on the same path due to its inertia.
TRUE
FALSE
____________________ is the tendency of an object to resist change in its state of motion.
Inertia
Velocity
Momentum
Acceleration
If a rocket ship going from Earth to the Moon leaves the gravitational pull of Earth, then it can shut off its engine and the ship will continue on to the Moon due to inertia.
TRUE
FALSE
Newton's 2nd Law is often written as an equation, (a) or (b) is equal to (c) times (d) .
F=ma
Force
mass
acceleration
Inertia
Velocity
Momentum
A baseball bat slows down when it hits a ball.
TRUE
FALSE
When you paddle a boat in the water, the force of your paddle will push the water which will apply an equal force back on you.
TRUE
FALSE
Jake and Angela are both standing on identical skateboards and perform a physics experiment in which they push off one another to move. Jake is much taller and more massive than Angela. If Jake pushes with 20 N of force, then what force does he feel from Angela?
20
10
40
5
The action reaction forces will always be (a) in magnitude and (b) in direction.
According to Newton's Third Law, the gas coming out of the back of the rocket is the (a) and the balloon rocket moving forward is the (b) .
Static friction is always less than kinetic friction.
TRUE
FALSE
If the coefficient of sliding friction between a 25 kg crate and the floor is 0.45, how much force is required to move the crate at a constant velocity across the floor?
83 N
110 N
115 N
75 N
A smooth wooden 40.0 N block is placed on a smooth wooden table. The coefficient of sliding friction between the block and the table top is 0.35. What is the force required to keep the block moving at constant velocity?
14.0 N
10.3 N
0.23 N
Friction acts in the same direction as motion.
TRUE
FALSE
Sand would be added to wet steps in order to
increase friction
decrease friction
decrease gravity
increase gravity
A force of 60 N is applied to a skier to pull him along a horizontal surface so that his speed remains constant. If the coefficient of friction of the skis on snow is 0.05, then what is the weight of the skier?
60 N
100 N
1200 N
600 N
If a 40 N block is resting on a rough horizontal table with a coefficient of static friction μ_s=0.60, then what is the force of static friction acting on the block?
24
12
36
18
If a 20 N block experiences a force of kinetic friction of 8.0 N from the surface of a table, then what is the coefficient of kinetic friction (μ_k) between the block and the table?
0.4
0.2
0.8
0.04
If a 10.4 kg block is on a rough horizontal table with a coefficient of friction μ=0.15, then what is the resulting force of friction on the block?
(a)
If a 3,000kg car is pulled with a force of 11000 N to the right causing it to accelerate at 3 s2m , then what is the force of friction (F_f) acting on the car?
2000
3000
4000
1000
If a 50 N block experiences a force of kinetic friction of 11 N from the surface of a table, then what is the coefficient of kinetic friction (μ_k) between the block and the table?
0.22
0.44
0.11
0.50
The Coffee cup in the picture is resting on a table. What force(s) are missing from the free body diagram?
No forces are missing
The normal force from the table pushing the cup up.
The normal force form the table pushing the cup down.
The friction force from the table pushing the cup left and right.
The forces on this chandelier are...
Gravity
Gravity and Normal
Gravity and Tension
Gravity, Tension, Friction, and Applied
Name the missing force.
Normal Force
Push/Pull Force
Friction Force
Tension Force
Name the missing force.
Gravitational Force
Normal Force
Friction Force
Applied Force
Luis is observing a game of Tug-of War. The center of the rope will move when which of the following is true?
The rope essentially has no mass of its own.
A player is added to the team on the right.
One team applies a greater force than the other team.
There is no friction between the ground and the players.
Applied forces on an object are unequal in size but are the same or opposite in direction
Unbalanced force
Balanced force
A card sliding across a table at a constant speed
Unbalanced force
Balanced force
Which of the following is an example of an unbalanced force?
