WorksheetsCCMS Ch. 3: Forces and Newton's Laws
Total questions: 35
Worksheet time: 18mins
This diagram represents a balloon that is moving in one direction while escaping air is moving in the opposite direction. What causes the balloon to move?
electrical forces
friction
action-reaction forces
gravitational potential energy
A 100-kg student kicks a 1.5-kg ball with a force of 450 N. What force does the ball apply to the student?
4.5 N
300 N
450 N
675 N
The combination of all of the forces acting on an object is called
total force
net force
gravitational force
balanced force
Which of the following is an example of a balanced force?
a cyclist slowing down
a car turning a corner
a moon orbiting a planet
a leaf lying on the grass
The pictures show a large box being pushed in opposite directions by two men. The box changed its position in the room because
the man on the right side applied more force than the man on the left side
the opposing forces were balanced
the smooth floor created no friction
the man on the left side applied more force than the man on the right side
Two students pull on opposite ends of a rope, but neither student is able to move the other. Which statement best explains why neither student is moved?
They each pull on the rope with the same amount of force, so the net force is zero.
They each exert the same amount of friction against the ground, so the net friction is zero.
Their forces are not balanced, but gravity keeps them from moving.
The two students have the same mass.
Neglecting friction, what is the magnitude of force, F, if the object remains at rest?
6 N
8 N
14 N
22 N
A large rock has a mass of 750 kg. What is its weight?
76.5 N
740.2 N
759.8 N
7,350 N
What net force is required to accelerate a car at a rate of 2 m/s2 if the car has a mass of 3,000 kg?
1,500 N
6,000 N
.00067 N
9,000 N
Inertia varies depending on--
force
mass
position
motion
The law of Inertia states--
an object at rest will stay at rest and an object in motion will stay in motion, unless acted on by an unbalanced force.
All forces are balanced.
For every action there is an equal an opposite reaction.
F= m x p
According to Newton’s second law of motion, ____________.
F= m x a
F= m x v
F = p x a
F = p x v
In the absence of air, a penny and a feather that are dropped from the same height at the same time will--
fall at different rates
fall at the same rate
float
not have momentum
The acceleration due to gravity is
98 m/s/s
9.8 ft/s
9.8 m/s/s
0.98 m/s/s
A feather will fall through the air more slowly than a brick because of
air resistance
gravity
inertia
momentum
Which of the following is an example of Newton’s 3rd law of motion?
a rocket blasting off into space.
Earth orbiting the sun.
a picture hanging on a wall does not move.
a soccer ball accelerates faster than a bowling ball when the same amount of force is applied.
Which of the following is an example of Newton’s 1st law?
a rocket blasting off into space.
Earth orbiting the sun.
When you paddle a canoe your oar goes backward but you go forward.
Your shoulder is pushed backward after shooting a shotgun.
During a collision, a passenger who does not wear a seatbelt will fly through the windshield due to-
the law of inertia
conservation of mass
action-reaction forces
balanced forces
Using the information provided, what is the net force applied and in which direction will it move?
40 N, left
40 N, right
10 N, left
10 N, right
If you were to travel to the moon, which of the following statements would be true?
Your weight and mass would be the same on the Earth and the Moon.
Your mass and weight would decrease.
Your mass would be the same but your weight would decrease.
Your mass would be the same but your weight would increase.
An object in free-fall
is weightless
has no mass
resists gravity
has an equal mass and weight
The force that opposes motion between surfaces that touch each other is
air resistance
gravity
friction
a balanced force
If the same force is applied to each of these balls, which one will have the LEAST acceleration?
baseball m = 1.0 kg
bowling ball m= 7.3 kg
golf ball m= 0.75 kg
tennis ball m= 0.5 kg
Which statement provides the best description of terminal velocity?
Terminal velocity is the last velocity of an object recorded by a scientist.
A skydiver never reaches terminal velocity.
Terminal velocity is the highest velocity that a falling object will reach.
Terminal velocity is the velocity a skydiver reaches just before touching the ground.
The attractive force of gravity on objects depends on which two factors?
weight and mass
friction and inertia
momentum and acceleration
mass and distance
The SI unit for weight is
lbs
N
kg
m/s²
Friction depends on two factors. This includes the amount of force pressing the two objects together and
the type of surface
the mass of the two objects
the size of the areas in contact
the location of the objects
A tool commonly used for measuring mass is
spring scale
metric ruler
triple beam balance
This law states that if an object exerts a force on another object, their total momentum doesn’t change. The total momentum is neither lost nor created, instead it is conserved.
Newton’s 2nd Law
Law of Conservation of Momentum
Law of gravitational acceleration
Newton’s 3rd Law
A cheetah weighs 650 N. What is the mass of the cheetah?
66.33 kg
6,370 kg
0.0015 kg
6.77 kg
If the cheetah weighs 437 N on another planet, what is the acceleration of gravity on this planet? (You will need the mass from the previous problem)
0.15 m/s²
44.59 m/s²
43.43 m/s²
6.59 m/s²
How much force is needed to accelerate an 87 kg object 9 m/s²?
7,047 N
783 N
9.67 N
0.103 N
If an object has a mass of 5,720 g and it is moved at an acceleration rate of 4 m/s², what is the amount of force applied to the object? (*Careful)
22,880 N
22.88 N
22,880,000 N
228.8 N
A 23,450 kg rocket is pushed with a thrust of 7,575,000 N. What is the acceleration of the rocket?
0.003 m/s²
1.78 x 1011 m/s²
9.8 m/s²
323.03 m/s²
If a meteor that weighs 3000 N hits the earth’s atmosphere at 13.2 m/s², what is the mass of the meteor?
227.27 kg
0.0044 kg
39,600 kg
306.12 kg
