WorksheetsACPS Forces, Motion, Gravity Mid-Unit Test
Total questions: 49
Worksheet time: 31mins
Name
Class
Date
1.
Four forces are acting on a box, as shown below.This box will increase in speed
a)
downward and to the left.
b)
downward and to the right.
c)
upward and to the left.
d)
upward and to the right.
2.
Which graph shows acceleration(speeding up)?
a)
A
b)
B
c)
C
d)
D
3.
Kara pushes her big brother on a swing at the playground. After he gets off the swing, her little brother gets on. Kara finds that it is easier to push her little brother than it was to push her big brother.What is the MOST LIKELY reason for this?
a)
A smaller mass always moves faster than a larger mass.
b)
A smaller mass always moves slower than a larger mass.
c)
Less force is needed to move a larger mass the same distance.
d)
More force is needed to move a larger mass the same distance.
4.
Which of the following objects are accelerating?
1) A cat jumped from a tree to chase the bird where his speed was 3 mph when he caught the bird.
2) A car beginning to drive away from the stop sign.
3) A runner turning down the side street to get home faster.
a)
2
b)
1 and 2
c)
2 and 3
d)
all of them
e)
none of them
5.
What type of force causes an ice skater to begin to move?
a)
balanced
b)
gravitational
c)
magnetic
d)
unbalanced
6.
Which statement correctly compares an astronaut on Earth and on the Moon?
a)
The mass of an astronaut is greater on Earth than the Moon.
b)
The mass of an astronaut is greater on the Moon than on Earth.
c)
The weight of an astronaut is greater on Earth than the Moon.
d)
The weight of an astronaut is greater on the Moon than on Earth.
7.
Using the graph, at what point did the car drive at a constant speed and at what point did the car completely stop?
a)
From 0-2 seconds (constant) & from 7-8 seconds (at rest)
b)
From 2-4 seconds (constant) & from 4-7 seconds (at rest)
c)
From 8-10 seconds (constant) & from 10-12 seconds (at rest)
d)
From 2-4 seconds (constant) & from 7-8 seconds (at rest)
8.
Which of the following graphs shows negative acceleration?
a)
A
b)
B
c)
C
d)
D
9.
Which segment of the graph shows a constant speed returning to start?
a)
A
b)
B
c)
C
d)
D
10.
Which of these is one of Newton’s laws of motion?
a)
An object’s momentum is the product of its mass and velocity.
b)
A moving object will continue moving until a force acts upon it.
c)
The force of gravity is proportional to the inverse square of the distance.
d)
The rate at which an object falls depends on the height from which it is dropped.
11.
Which equation expresses Newton’s second law of motion?
a)
F = ma
b)
F = m/a
c)
F = m - a
d)
F = m + a
12.
Which of the following indicate that an object has been subjected to an unbalanced force?
a)
The object speeds up.
b)
The object slows down.
c)
The object changes direction.
d)
Any of the above.
13.
Which segment of the graph shows the fastest constant speed?
a)
A
b)
B
c)
C
d)
D
14.
Two galaxies are interacting with each other. What is the force that draws these two galaxies toward each other?
a)
friction
b)
gravity
c)
electricity
d)
magnetism
15.
You arrive in my class 45 seconds after leaving math which is 90 meters away. How fast did you travel?
a)
0.5 m/s
b)
2.0 m/s
c)
0.5 km/s
d)
2.0 km/s
16.
Tim pulls on a rope with a force of 50 N and Mike pulls on the same rope with a force of 40 N, as shown below.Which statement describes the motion of the rope?
a)
The rope moves toward Tim.
b)
The rope does not move at all.
c)
The rope moves toward Mike.
d)
The rope sags toward the ground.
17.
A runner covers the last straight stretch of a race in 4 s. During that time, he speeds up from 5 m/s to 9 m/s. What is the runner’s acceleration in this part of the race?
a)
-1 m/s2
b)
3.5 m/s2
c)
1.25 m/s2
d)
1 m/s2
18.
For any object in motion, distance is always __________ displacement
a)
less than
b)
less than or equal to
c)
greater than
d)
greater than or equal to
e)
equal to
19.
Which best describes how forces must interact for a kite to sail up into the air?
a)
The force of gravity must be equal to the force of the wind.
b)
The force of gravity must be greater than the wind
c)
The force of the wind must be greater than the force of gravity.
d)
The force of the person flying the kite must be equal to the force of the wind.
20.
A 10-newton force and a 15-newton force are acting from a single point in opposite directions.What additional force must be added to produce equilibrium?
a)
5 N acting in the same direction as the 10-N force
b)
5 N acting in the same direction as the 15-N force
c)
10 N acting in the same direction as the 10-N force
d)
25 N acting in the same direction as the 15-N force
21.
An object moving along a surface suddenly increases speed. What can cause this to happen?
a)
It is moved by balanced forces.
b)
It is moved by two opposite forces.
c)
It is moved by an unbalanced force.
d)
It is moved by a force without direction.
22.
Which of the following statements best describes the force of Earth’s gravity on a rocket moving upward?
a)
The gravitational force is constant for all altitudes.
b)
The gravitational force is weaker when the rocket is higher.
c)
The gravitational force is stronger when the rocket is higher.
d)
The gravitational force is zero when the altitude is greater than 10,000 miles.
23.
Lindsay went to a concert in downtown Dallas. The distance between the concert and her house was 25 miles east. Once the concert was over she took a cab 1 mile to the train station and then took the train the rest of the way home (west). What was the velocity of the train if it took 12 minutes for it to arrive at Lindsay’s house?
a)
2 miles per minute west
b)
1 mile per minute west
c)
2 miles per minute east
d)
1 mile per minute east
24.
Use the technical passage below to answer the next 3 questions. A secured object in an orbiting spacecraft remains at rest unless acted upon by ___________
a)
an electrical force
b)
an external force
c)
a magnetic force
d)
a frictional force
25.
Use the passage in the above question. If no additional forces are applied to an astronaut moving in space, the astronaut will
a)
continue moving in the same direction at a constant speed
b)
change direction but continue moving at a constant speed
c)
move in the same direction but at a faster speed
d)
change direction and move at a faster speed
26.
A student is driving her car when an insect strikes her windshield. Which of the following statements best describes the forces in this situation?
a)
The insect strikes the windshield with the same force
b)
The insect strikes the windshield with a force, and the windshield exerts no force on the insect.
c)
The insect exerts no force on the windshield, and the windshield strikes the insect with a large force.
d)
The insect strikes the windshield with a small force, and the windshield strikes the insect with a large force.
27.
The runner leaves his home and runs 400 meters north, then turns around to go home. After 200m he gets a cramp and has to stop. What is the distance that the runner ran? What is the runner's displacement?
a)
800 meters; 0 meters
b)
600 meters; 600 meters S
c)
600 meters; 200 meters N
d)
600 meters, 600 meters N
28.
A student sets a block at the top of a wooden ramp.The student pushes the block. As the block slides down the ramp, it slows down and then comes to a stop. What force causes the block to slow down?
a)
the force of gravity
b)
the force of friction
c)
the force of magnetism
d)
the force of the student’s push
29.
A 2000 kg car is pulling a 1000 kg trailer. The car’s engine exerts a 6000 N force to move the car and the trailer. In addition, the car and the trailer each experience a 1000 N frictional force as they are being pulled, as represented below.What is the magnitude of the net force on this system?
a)
2000 N
b)
4000 N
c)
5000 N
d)
8000 N
30.
Which statement best describes what must happen in order for a person to lift an object?
a)
The force of gravity must be greater than the mass of the object.
b)
The mass of the object must be greater than the force of gravity.
c)
The force of gravity must be greater than the upward pull or push on the object.
d)
The upward pull or push on the object must be greater than the force of gravity.
31.
A child jumps on a trampoline, as shown above.Which of the following causes the child to rise in the air?
a)
Inertia
b)
Mass
c)
A reaction force
d)
A gravitational force
32.
Tasha is pulling a wagon holding her brother.Tasha notices that even though she stops pulling the wagon, her brother’s body moves forward.Which of Newton’s laws of motion explains Tasha’s observation?
a)
The first law, in which an object moves forward in a straight line unless acted upon by an outside force
b)
The second law, in which force is a product of an object’s acceleration and mass
c)
The third law, in which every action has an equal and opposite reaction
d)
The fourth law, in which energy is never lost but is transformed from one object to another
33.
Why does an astronaut who weighs 180 pounds on Earth weigh only 30 pounds on the Moon?
a)
Earth has an atmosphere, and the Moon does not.
b)
Earth revolves around the Sun, but the Moon revolves around Earth.
c)
The force of gravity on Earth is greater than the force of gravity on the Moon.
d)
Earth rotates faster on its axis than the Moon.
34.
What happens to the motion of a moving object when the net force (sum of the forces) acting on it is zero?
a)
The object travels in a straight line at a constant speed
b)
The object comes to rest due to opposing forces.
c)
The object speeds up in the direction of the greater force.
d)
The object changes direction while moving at a constant speed.
35.
Acceleration occurs when an object changes its speed or ______.
a)
direction
b)
force
c)
inertia
d)
mass
36.
Which runner stopped for a rest?
a)
Albert
b)
Bob
c)
Charlie
37.
How long did one of the runner's rest?
a)
8 seconds
b)
13 seconds
c)
5 seconds
d)
50 seconds
38.
Which runner won the race?
a)
Albert
b)
Bob
c)
Charlie
39.
Velocity is
a)
speed and acceleration
b)
constant speed
c)
a frame of reference
d)
speed in a given direction
40.
Acceleration is
a)
increasing speed
b)
decreasing speed
c)
changing direction
d)
all of the above
41.
A car driving at 50 miles per hour drives for 2 hours. What distance did it cover?
a)
50 miles
b)
25 miles
c)
100 miles
d)
75 miles
42.
What does this graph represent?
a)
Constant speed
b)
Acceleration
c)
Not moving
43.
What does this graph represent?
a)
Constant Speed
b)
Acceleration
c)
Not moving
44.
What does this graph represent?
a)
Constant speed
b)
Acceleration
c)
Not moving
45.
What is happening at E?
a)
Stationary
b)
Accelerating
c)
Fast steady speed; moving away from the starting position
d)
Steady speed; returning to start position
46.
Which runner had a head start?
a)
A
b)
B
c)
C
47.
Every morning, Tom walks along a straight road from his home to the bus stop. Below, is a graph representing Tom’s trip to school.
- What is the distance covered through the second segment, which is between 50 seconds, and 70 seconds?
- What is the distance covered through the second segment, which is between 50 seconds, and 70 seconds?
a)
40 meters
b)
60 meters
c)
80 meters
d)
20 meters
48.
Which graph shows the object standing still?
a)
A
b)
B
c)
C
d)
D
49.
What is this line of this graph showing?
a)
moving away from starting point at a constant speed
b)
moving back towards the starting point at a constant speed
c)
acceleration (getting faster)
d)
deceleration (getting slower)
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