Transcript Motion - GEOCITIES.ws

Newton’s Laws Review
Chapters 3 and 4
Question 1
Which of Newton’s Laws says that “a net force
acting on an object causes the object to
accelerate in the direction of the force” ?
A.
B.
C.
D.
E.
Newton’s First Law
Newton’s Second Law
Newton’s Third Law
Newton’s Fourth Law
Newton’s Fifth Law
Question 1
Which of Newton’s Laws says that “a net force
acting on an object causes the object to
accelerate in the direction of the force” ?
B. Newton’s Second Law
Question 2
Which equation can be used to represent
Newton’s third law?
A.
B.
C.
D.
E.
F=ma
V=IR
v=f
p=mv
v=d/t
Question 2
Which equation can be used to represent
Newton’s third law?
D. p = m v
Question 3
Which of Newton’s Laws is known as the
“Law of Inertia” ?
A.
B.
C.
D.
E.
Newton’s First Law
Newton’s Second Law
Newton’s Third Law
Newton’s Fourth Law
Newton’s Fifth Law
Question 3
Which of Newton’s Laws is known as the
“Law of Inertia” ?
A. Newton’s First Law
Question 4
What are the correct units for acceleration?
A.
B.
C.
D.
E.
m/s2
N
kg
m/s
s
Question 4
What are the correct units for acceleration?
A. m/s2
Question 5
A car is traveling east at 200 m/s. The car slows
down to a stop in 10 s. What is the car’s final
speed?
A.
B.
C.
D.
E.
2000 m/s
20 m/s
0 m/s
200 m/s2
10 s
Question 5
A car is traveling east at 200 m/s. The car slows
down to a stop in 10 s. What is the car’s final
speed?
C. 0 m/s
Question 6
A 60 kg woman is jogging down the road at a
speed of 6 m/s. What is her momentum?
A.
B.
C.
D.
E.
60 kg m/s
10 kg m/s
6 kg m/s
360 kg m/s
66 kg m/s
Question 6
A 60 kg woman is jogging down the road at a
speed of 6 m/s. What is her momentum?
D. 360 kg m/s
Question 7
What is the tendency of an object to resist
change in motion called?
A.
B.
C.
D.
E.
inertia
acceleration
distance
terminal velocity
air resistance
Question 7
What is the tendency of an object to resist
change in motion called?
A. inertia
Question 8
What is rate of acceleration due to gravity?
A.
B.
C.
D.
E.
50 m/s2
5 m/s2
9.8 m/s2
98 m/s2
32 m/s2
Question 8
What is rate of acceleration due to gravity?
C. 9.8 m/s2
Question 9
A 90 kg man goes to the moon. What
happens to his mass?
A.
B.
C.
D.
E.
Goes up
Goes down
Remains the same
Changes color
Disappears
Question 9
A 90 kg man goes to the moon. What
happens to his mass?
C. Remains the same
Question 10
A girl pulls on a 20 kg cart and accelerates it
2 m/s2. How much force is she applying?
A.
B.
C.
D.
E.
20 N
2N
10 N
40 N
0N
Question 10
A girl pulls on a 20 kg cart and accelerates it
2 m/s2. How much force is she applying?
D. 40 N
Question 11
A 1 kg piece of paper and a 1 kg rock are dropped
from the same height. Describe how gravity acts
on them.
A.
B.
C.
D.
E.
Gravity pulls both down with the same force.
Gravity pushes both up with the same force.
Gravity pulls down more on the rock.
Gravity pulls down more on the paper.
Gravity has no effect.
Question 11
A 1 kg piece of paper and a 1 kg rock are dropped
from the same height. Describe how gravity acts
on them.
A. Gravity pulls both down with the same force.
Question 12
How are speed and velocity related?
A. They are exactly the same.
B. Speed tells how fast you are going, velocity only
gives you the direction.
C. They both tell you how fast you are going, but
speed also gives the direction.
D. They have nothing in common.
E. They both tell you how fast you are going, but
velocity also gives the direction.
Question 12
How are speed and velocity related?
E. They both tell you how fast you are going, but
velocity also gives the direction.
Question 13
What is the rate of change in position called?
A.
B.
C.
D.
E.
Speed
Acceleration
Time
Distance
Gravity
Question 13
What is the rate of change in position called?
A. Speed
Question 14
A ruby-throated hummingbird flies from one flower
to another with a speed of 10 m/s. If it can make
the travel in 30 seconds, how far away are the
two flowers?
A.
B.
C.
D.
E.
30 m
10 m
3m
300 m
40 m
Question 14
A ruby-throated hummingbird flies from one flower
to another with a speed of 10 m/s. If it can make
the travel in 30 seconds, how far away are the
two flowers?
D. 300 m
Question 15
Jack enjoys running for exercise. On a cool, sunny
morning, he can run 2000 meters in 400 seconds
if he runs west, away from the sun. At what
velocity is Jack able to run?
A.
B.
C.
D.
E.
5 m/s
5 m/s west
80,000 m/s
80,000 m/s west
2400 m/s
Question 15
Jack enjoys running for exercise. On a cool, sunny
morning, he can run 2000 meters in 400 seconds
if he runs west, away from the sun. At what
velocity is Jack able to run?
B. 5 m/s west
Question 16
If it takes 5 minutes to run from one end of a 1000
meter road to the other, how many seconds does
it take to get there?
A.
B.
C.
D.
E.
300 s
200 s
5000 s
3.3 s
1000 s
Question 16
If it takes 5 minutes to run from one end of a 1000
meter road to the other, how many seconds does
it take to get there?
A. 300 s
Question 17
Which equation can be used to express
Newton’s second law of motion?
A.
B.
C.
D.
E.
F=ma
V=IR
v=f
p=mv
v=d/t
Question 17
Which equation can be used to express
Newton’s second law of motion?
A. F = m a
Question 18
A well-trained jogger can run a 1000 meter relay
race in 200 seconds. At what speed can the
jogger run?
A.
B.
C.
D.
E.
1000 m/s
5 m/s
200 m/s
5 m/s east
200,000 m/s
Question 18
A well-trained jogger can run a 1000 meter relay
race in 200 seconds. At what speed can the
jogger run?
B. 5 m/s
Question 19
In the equation: a = v / t
what does v represent?
A.
B.
C.
D.
E.
Average velocity
Total velocity
Vfinal – Vinitial
Vfinal + Vinitial
Vinitial - Vfinal
Question 19
In the equation: a = v / t
what does v represent?
C. Vfinal – Vinitial
Question 20
In the equation F = m a, what are the units for
mass?
A.
B.
C.
D.
E.
kg m/s2
N
m/s2
m/s
kg
Question 20
In the equation F = m a, what are the units for
mass?
E. kg
Question 21
What distance can a ball roll across a floor if it is
pushed with a speed of 100 m/s and is allowed
to roll for 10 seconds?
(Ignore possible friction.)
A.
B.
C.
D.
E.
1000 m
10 m
110 m
0.1 m
0m
Question 21
What distance can a ball roll across a floor if it is
pushed with a speed of 100 m/s and is allowed
to roll for 10 seconds?
(Ignore possible friction.)
A. 1000 m
Question 22
A person is exercising by running at a constant speed
of 10 m/s. If she can run for 20 minutes, what
distance could she travel?
A.
B.
C.
D.
E.
0.5 m
2m
200 m
1200 m
12,000 m
Question 22
A person is exercising by running at a constant speed
of 10 m/s. If she can run for 20 minutes, what
distance could she travel?
E. 12,000 m
Question 23
Kirsten is running down the road at 9 m/s. She has a
total mass of 60 kg. Tobey is jogging down the
same road at a speed of 8 m/s. He has a mass of
70 kg. Who has the greater momentum?
A.
B.
C.
D.
E.
Tobey with 540 kg m/s
Kirsten with 540 kg m/s
They have the same momentum.
Tobey with 560 kg m/s
Kirsten with 560 kg m/s
Question 23
Kirsten is running down the road at 9 m/s. She has a
total mass of 60 kg. Tobey is jogging down the
same road at a speed of 8 m/s. He has a mass of
70 kg. Who has the greater momentum?
D. Tobey with 560 kg m/s
Question 24
A 10,000 kg minivan is driving down a road that is
2000 meters long. If the minivan is able to drive
the entire length of the road in 10 seconds, what
is its momentum?
A.
B.
C.
D.
E.
10,000 kg m/s
200 kg m/s
2,000,000 kg m/s
100,000 kg m/s
1000 kg m/s
Question 24
A 10,000 kg minivan is driving down a road that is
2000 meters long. If the minivan is able to drive
the entire length of the road in 10 seconds, what
is its momentum?
C. 2,000,000 kg m/s
Question 25
A train is riding through a station at 10 m/s. After
passing the station, it speeds up to its maximum
speed of 135 m/s. It takes 1 minute for the train
to reach its maximum speed. What is the final
speed?
A.
B.
C.
D.
E.
125 m/s
1350 m/s
2.1 m/s
135 m/s
0 m/s
Question 25
A train is riding through a station at 10 m/s. After
passing the station, it speeds up to its maximum
speed of 135 m/s. It takes 1 minute for the train
to reach its maximum speed. What is the final
speed?
D. 135 m/s
Question 26
A 1 kg wood block and a 1 kg sheet of paper are
released from the same height at the same time.
Gravity pulls on both objects equally, but the
wood block hits the ground first. Why?
A.
B.
C.
D.
E.
The wood block weighs more.
Friction pulls the block downward.
Air resistance holds the paper up.
The paper is less affected by air resistance.
An antigravity field surrounds the paper.
Question 26
A 1 kg wood block and a 1 kg sheet of paper are
released from the same height at the same time.
Gravity pulls on both objects equally, but the
wood block hits the ground first. Why?
C. Air resistance holds the paper up.
Question 27
Why is a seatbelt important to wear in a car crash?
A. Without it, a person’s inertia would send him or
her forward into the windshield.
B. With it, the person’s mass becomes “part” of the
car.
C. With it, there is less chance of hitting the
windshield.
D. All three: A, B and C.
E. None of these.
Question 27
Why is a seatbelt important to wear in a car crash?
D. All three: A, B and C.
Question 28
A 20 N force is applied to a ball. If the ball has a
mass of 4 kg, how fast will it accelerate?
A.
B.
C.
D.
E.
8 m/s2
5 m/s2
80 m/s2
0 m/s2
24 m/s2
Question 28
A 20 N force is applied to a ball. If the ball has a
mass of 4 kg, how fast will it accelerate?
B. 5 m/s2
Question 29
A man weighs 98 N. What is his mass?
(Remember: the acceleration due to gravity is
9.8 m/s2)
A.
B.
C.
D.
E.
10 kg
0.1 kg
960 kg
0 kg
1 kg
Question 29
A man weighs 98 N. What is his mass?
(Remember: the acceleration due to gravity is
9.8 m/s2)
A. 10 kg
Question 30
A car is traveling at a constant speed of 20 m/s down
a road that is 100 m long. How long will it take
for the car to reach the end of the street?
A.
B.
C.
D.
E.
5s
2000 s
200 s
120 s
0.2 s
Question 30
A car is traveling at a constant speed of 20 m/s down
a road that is 100 m long. How long will it take
for the car to reach the end of the street?
A. 5 s