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Forces And Motion
Test Description: Forces Motion Unit Review
Instructions: Answer all questions to get your test result.
1) When a car suddenly stops at a red light, a book lying on the car seat slides forward. Why does the book continue to move forward?
A
The book’s inertia causes it to continue moving.
B
The car moves in reverse more rapidly than the book.
C
The friction of braking transfers energy to the book.
D
The book loses its backward force.
2) The law requires all people riding in a car to wear seat belts. If the car suddenly stops, the seat belts hold the passengers in place. How does Newton’s first law of motion apply when a person is not wearing a seat belt?
A
The passengers will not be affected by the sudden stop of the car.
B
The passengers will lean into another passenger’s seat.
C
The passengers will move backward into the seat.
D
The passengers will continue moving forward due to inertia.
3) How does Newton’s first law of motion apply to a ball rolling across the gym floor after an unbalanced force is applied?
A
The ball will start bouncing until it hits the wall.
B
The ball will roll in a zigzag pattern to the other end of the gym.
C
The ball will stop at the line halfway across the gym.
D
The ball will continue to roll until an unbalanced force in applied.
4) A car accelerates down the road. What is the “reaction” to the tires pushing on the road?
A
the mass of the car pushing on the tires
B
the air in the tires moving the car
C
the road pushing on the tires
D
the road moving away from the tires
5) Imagine you could throw a ball in a frictionless environment such as outer space. Once you let go of the ball, what will have happened to the ball according to the Law of Inertia (Newton’s 1st Law)?
A
It will continue to speed up forever.
B
It will travel in a straight line but eventually slow down.
C
It will travel in a straight line forever.
D
It will slow down and turn.
6) What is the force needed to accelerate a 10kg object at 2 m/s2?
A
0.2 N
B
20 N
C
2 N
D
5 N
7) Which of the following describes (states) an object that is speeding up? The object is ________.
A
in a frictionless environment
B
moving with constant speed
C
decelerating
D
accelerating
8) A ball rolls across a smooth surface at a steady (constant) 0.5 meters per second (m/s). What is its acceleration?
A
9.8 m/s2
B
0.5 m/s2
C
2 m/s2
D
0
9) What does it take to change the direction or speed of an object?
A
more than one force
B
an unbalanced force
C
a balanced force
D
no force
10) If there is no force acting on an object, it will______
A
move with the same speed AND direction
B
move in the same direction
C
move at the same speed
D
eventually slow down and stop
11) A bird flies 50 meters in 10 seconds. What is its speed?
A
5 meters per second
B
0.2 meters per second
C
0.2 seconds per meter
D
5 seconds per meter
12) Which of the following is used to measure speed?
A
seconds per meter
B
seconds
C
meters per second
D
meters
13) A car is traveling south on the highway at 55 mph. It passes several road signs and a bus that is heading north on the same highway. Which reference point is best used for describing the motion of the car?
A
a tire on the bus
B
the driver of the car
C
the driver of the bus
D
a road sign beside the highway
14) A student drives 50 miles north from the starting line of a race, then drives 60 miles going south. Which best describes the student’s displacement from the starting line?
A
110 miles south
B
110 miles north
C
10 miles south
D
10 miles north
15) Which best describes the change in position of an object’s location compared to a reference point?
A
vector
B
speed
C
motion
D
acceleration
16) Mason is watching his friends race dirt bikes. Which proves his friends are in motion on their dirt bikes?
A
Each bike has mud on the tires.
B
Each bike has six gears.
C
Each bike has a maximum speed of 60 mph.
D
Each bike just passed the finish line.
17) Which is MOST likely needed when describing the change in position of an object?
A
initial speed
B
reference point
C
direction change
D
constant rate
18) Jerry saw a car parked in front of his house early in the day. Later that day, he saw the same car parked in front of a neighbor’s house that is two houses away from his house. How does Jerry know the car has moved?
A
Jerry was told earlier in the day that the car would be moved, and he accepted this story as evidence.
B
Jerry guessed the neighbor ran errands and parked the car in a different location upon returning.
C
Jerry assumed since it was later in the day, the car had moved.
D
Jerry compared the car’s present location with its past location.
19) David is new to Holly Middle School and was given a map to find his classes. He starts from the school office and walks south 50 meters to his science class. Which best represents David’s reference point?
A
science class
B
50 meters
C
map
D
school office
20) A car moves at a constant speed of 40 mph for 20 minutes. The car stops for a train for 10 minutes, then resumes a constant speed of 40 mph for another 20 minutes. Which best describes the motion of the car over the 50-minute trip?
A
constant speed → increase of 10 mph → constant speed
B
no acceleration → increase of 40 mph → constant speed
C
constant speed → no motion → constant speed
D
constant speed → constant speed → no motion
*select an answer for all questions
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