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MCQ Questions for Class 9 Science Chapter 8 Motion

Total questions: 100

Worksheet time: 1hrs 15mins

Name
Class
Date
1.

A particle is moving in a circular path of radius r. The displacement after half circle will be

a)

r

b)

2r

c)

zero

d)

2.ƛ r

2.

Which of the following is most likely not a case of uniform circular motion?

a)

(a) Motion of the earth around the sun

b)

(b) Motion of a toy train on a circular track

c)

(c) Motion of a racing car on a circular track

d)

(d) Motion of hours’ hand on the dial of a clock

3.

From the given υ – t graph, it can be inferred that the object is

a)

uniform motion

b)

at rest

c)

in non-uniform motion

d)

moving with uniform acceleration

4.

Four cars A, B, C and D are moving on a levelled road. Their distance versus time graphs are shown in the adjacent figure. Choose the correct statement.

a)

Car A is faster than car D.

b)

Car B is the slowest.

c)

Car D is faster than car C.

d)

Car C is the slowest.

5.

Which of the following figures correctly represents uniform motion of a moving object?

a)

a

b)

b

c)

c

d)

d

6.

Velocity-time graph of an object is given below. The object has

a)

Uniform velocity

b)

Uniform speed

c)

Uniform retardation

d)

Variable acceleration

7.

Which one of the following graphs shows the object to be stationary?

a)

a

b)

b

c)

c

d)

d

8.

A worker covers a distance of 40 km from his house to his place of work, and 10 km towards his house back. Then the displacement covered by the worker in the whole trip is

a)

zero km

b)

10 km

c)

30 km

d)

50 km

9.

Rate of change of displacement is called

a)

Speed

b)

Deceleration

c)

Acceleration

d)

Velocity

10.

SI Unit of measurement of acceleration is

a)

m/s

b)

m/s2

c)

m/hr

d)

M

11.
A greater applied force is required to move an object with a greater mass than one with a smaller mass.
a)
True
b)
False
12.
If a baseball and a cannonball are dropped from the same height at the same time, which ball will hit the ground first?
a)
the cannonball
b)
the baseball
c)
The balls land at the same time.
d)
the ball with the larger volume
13.
If an action force is a cue ball (white) hitting a billiard ball (various colors) when playing pool, then the reaction force is
a)
exerted on the table
b)
exerted on all the other billiard balls.
c)
not present
d)
exerted by the billiard ball on the cue ball.
14.
A crumpled piece of paper hits the ground before a flat sheet of paper because
a)
the acceleration of gravity is greater on the  crumpled paper.
b)
there is more air resistance against the flat paper.
c)
the crumpled paper is more massive
d)
the crumpled paper is less massive.
15.
According to Newton’s first law of motion, a moving object that is not acted on by an unbalanced force will
a)
remain in motion.
b)
eventually come to a stop.
c)
change its momentum.
d)
accelerate.
16.
A hiker’s velocity begins at 1.8 m/s uphill and changes to 1.5 m/s uphill. How do you know that the hiker has a negative acceleration?
a)
His direction changed.
b)
His direction was unchanged.
c)
His speed increased.
d)
His speed decreased.
17.
How does Newton’s third law explain how a rocket takes off?
a)
The rocket’s acceleration is positive, while the gasses acceleration is negative but the direction is the same. 
b)
The rocket is at rest until ignition.
c)
The hot gasses move in one direction, while the rocket moves in the opposite direction but with equal force.
d)

all of these

18.
Acceleration is caused by a force acting on a mass.
a)
Newton’s first law of motion
b)
Newton’s second law of motion
c)
Newton’s third law of motion
19.
For a force on an object there is an equal and opposite force.
a)
Newton’s first law of motion
b)
Newton’s second law of motion
c)
Newton’s third law of motion
20.
Without any force to change it, an object at rest stays at rest and an object in motion stays in motion
a)
Newton’s first law of motion
b)
Newton’s second law of motion
c)
Newton’s third law of motion
21.
If a baseball and a cannonball are dropped from the same height at the same time, which ball will hit the ground first?
a)
the cannonball
b)
the baseball
c)
The balls land at the same time.
d)
the ball with the larger volume
22.
If a baseball and a cannonball are dropped from the same height at the same time, which ball will hit the ground first?
a)
the cannonball
b)
the baseball
c)
The balls land at the same time.
d)
the ball with the larger volume
23.

How is displacement different from distance?

a)

displacement is a vector, it must have magnitude and direction

b)

displacement is a vector, it must have magnitude only

c)

displacement is a scalar, it must have magnitude and direction

d)

displacement is a scalar, it must have magnitude only

24.
The Standard Units for Speed is ?
a)
m/s (meters per second)
b)
ms (meters times seconds)
c)
mskg (meters times seconds kilograms)
d)
m/s*kg (meters per second kilograms)
25.
Runner A (blue) has the same displacement as Runner B (black).
a)
False
b)
True
26.
Acceleration: is the rate of change in ___________.
a)
speed
b)
distance
c)
velocity 
d)
displacement 
27.

How can you find the distance around a circle?

a)

2πr

b)

d/t

c)

v2

d)

T

28.
An object is _____ if its position changes relative to another object.
a)
in motion
b)
at reset
c)
a frame of refence
d)
magical
29.

A truck driving at 60 km per hour travels 150 km. How long is it driving for?

a)

9000 hours

b)

0.4 hours

c)

210 hours

d)

2.5 hours

30.

Which of the following is a vector quantity?

a)

Work

b)

Speed

c)

Velocity

d)

Force

e)

Accelaration

31.

Ram travels at a speed of 20 km/hr while going to school. While coming back, he travels at a speed of 30 km/hr(due to less traffic). What his it’s average speed?

a)

25km/hr

b)

26km/hr

c)

20km/hr

d)

24km/hr

e)

Cant be determined

32.
When something has speed in a certain direction it is called ___________.
a)
motion
b)
position
c)
velocity
d)
speed
33.

Which of the following is a vector quantity?

a)

Work

b)

Speed

c)

Velocity

d)

Force

e)

Accelaration

34.

What is the rate of change in velocity known as?

(a)  

35.
An object is _____ if its position changes relative to another object.
a)
in motion
b)
at reset
c)
a frame of refence
d)
magical
36.
Speed =
a)
distance / time
b)
time / distance
c)
distance * time
37.
You walk 10 meters to math class in 20 seconds. Your average speed is
a)
2 m/s
b)
0.5 m/s
c)
200 m/s
d)
5 m/s
38.
This graph shows
a)
An object stopped
b)
An object slowing down
c)
An object speeding up
d)
An object moving at constant speed
39.
What does this graph represent?
a)
Constant speed
b)
Acceleration
c)
Not moving
40.
Acceleration is
a)
increasing speed
b)
decreasing speed
c)
changing direction
d)
all of the above
41.
This is a velocity-time graph.  What is the object doing in segment C?
a)
Positive acceleration
b)
Negative acceleration
c)
Constant Velocity
d)
Not moving
42.

The slope of speed - time graph gives

a)

speed

b)

velocity

c)

momentum

d)

acceleration

43.
Which line represents an object moving at a slower speed?
a)
A
b)
B
44.
A car starts from rest at a stop light and reaches 20 m/s in 3.5 s. Determine the acceleration of the car.
a)
2.2m/s2
b)
7.0m/s2
c)
5.7m/s2
d)
70m/s2
45.
What is the formula to calculate speed?
a)
S = t/d
b)
S = d/t
c)
S = d x t
d)
S = t x d
46.
What is velocity?
a)
the quickness of an object
b)
the location of an object
c)
acceleration
d)
speed in a specific direction
47.
What is the speed of an object that travels 60 meters in 4 seconds?
a)
240 m/s
b)
15 m/s
c)
0.067 m/s
d)
15 mph
48.
You walk 10 meters to math class in 20 seconds. Your average speed is
a)
2 m/s
b)
0.5 m/s
c)
200 m/s
d)
5 m/s
49.

How can you find the distance around a circle?

a)

2πr

b)

d/t

c)

v2

d)

T

50.

Which of the following BEST describes the difference between "distance" and "displacement"?

a)

Distance measurements can't be negative, while displacement measurements can be negative

b)

Distance measures the change of position of an object in motion, while displacement measures the direction in which an object traveled.

c)

Distance is a measure of the total length of the motion, while displacement is the difference in position between starting and ending positions including direction.

d)

Distance measurements are recorded in meters, while displacement measurements are recorded in feet.

51.

The area under a velocity-time graph represents the...

a)

...acceleration.

b)

...distance travelled.

c)

...displacement.

d)

...average speed.

52.

A particle is moving in a circular path of radius r. The displacement after half circle will be

a)

r

b)

2r

c)

zero

d)

2.ƛ r

53.

Which of the following is most likely not a case of uniform circular motion?

a)

(a) Motion of the earth around the sun

b)

(b) Motion of a toy train on a circular track

c)

(c) Motion of a racing car on a circular track

d)

(d) Motion of hours’ hand on the dial of a clock

54.

From the given υ – t graph, it can be inferred that the object is

a)

uniform motion

b)

at rest

c)

in non-uniform motion

d)

moving with uniform acceleration

55.

Four cars A, B, C and D are moving on a levelled road. Their distance versus time graphs are shown in the adjacent figure. Choose the correct statement.

a)

Car A is faster than car D.

b)

Car B is the slowest.

c)

Car D is faster than car C.

d)

Car C is the slowest.

56.

Which of the following figures correctly represents uniform motion of a moving object?

a)

a

b)

b

c)

c

d)

d

57.

Velocity-time graph of an object is given below. The object has

a)

Uniform velocity

b)

Uniform speed

c)

Uniform retardation

d)

Variable acceleration

58.

Which one of the following graphs shows the object to be stationary?

a)

a

b)

b

c)

c

d)

d

59.

A worker covers a distance of 40 km from his house to his place of work, and 10 km towards his house back. Then the displacement covered by the worker in the whole trip is

a)

zero km

b)

10 km

c)

30 km

d)

50 km

60.

SI Unit of measurement of acceleration is

a)

m/s

b)

m/s2

c)

m/hr

d)

M

61.

An object is said to be in __________ if its position changes with time.

a)

rest

b)

motion

c)

both

62.

The motion of molecules of a liquid is

a)

random

b)

non random

c)

uniform

63.

The rate of change of velocity is called _______________.

a)

Speed

b)

Acceleration

c)

Motion

d)

None of them

64.

The rate of change of displacement is called _______________.

a)

Speed

b)

Acceleration

c)

Motion

d)

None of them

65.

The S.I unit of acceleration is:

a)

m/s

b)

ms-2

c)

cm/s

d)

ft/s

66.
D-Lo watches a red buggy car, which is his favorite activity. He watches the car cover 2 meters every second. Which graph would represent this?
a)
A (upper left)
b)
B (bottom left)
c)
C (upper right)
d)
D (bottom right)
67.
Which is an example of zero acceleration?
a)
A merri-go-round moving at a constant rate
b)
A car coming to a stop
c)
A boat speeding up
d)
A person running on a treadmill at a rate of 6 MPH
68.
Which graph shows an object not moving?
a)
A
b)
B
c)
C
d)
D
69.
Which graph shows an object moving at a constant rate?
a)
A
b)
B
c)
D
d)
E
70.
Which graph shows an object increasing speed?
a)
A
b)
B
c)
D
d)
E
71.
Which graph shows an object slowing down?
a)
A
b)
B
c)
C
d)
E
72.
Morgan walks 10 miles South. Trevor walks 10 miles North in the same amount of time.  They have:
a)
Different average speeds
b)
Different velocities
c)
Same velocity
d)
Same motion
73.
How long will your trip take (in hours) if you travel 350 km at an average speed of 80 km/hr? 
a)
80 hours
b)
.22 hours
c)
4.38 hours
d)
6
74.
A car starts from a stoplight and is traveling with a velocity of 10 m/sec east in 20 seconds.  What is the acceleration of the car?
a)
.5 m/s/s
b)
.5 m/s
c)
2 m/s/s
d)
2 m/s
75.
A ball is rolled at a velocity of 12 m/sec.  After 36 seconds, it comes to a stop.  What is the   acceleration of the ball?
a)
3 m/s/s
b)
-3 m/s/s
c)
.33 m/s/s
d)
-.33 m/s/s
76.
This graph shows
a)
An object speeding up
b)
An object slowing down
c)
An object stopped
d)
An object moving at constant speed
77.

Which type of speed does the speedometer of a car measures?

a)

Average speed

b)

Instantaneous speed

c)

Uniform speed

d)

Increasing speed

78.

The odometer of a car reads 5000 km at the start of a trip and 5600 km at the end of the trip. If the trip took 3 hour, Calculate the average speed of a car.

a)

100 km/hr

b)

200 km/hr

c)

300 km/hr

d)

400 km/hr

79.

Area under (v-t) graph represents a physical quantity which has the unit

a)

m2

b)

m

c)

m3

d)

ms-1

80.

Calculate the total displacement travelled by the object in a given graph.

a)

200 m

b)

240 m

c)

300 m

d)

340 m

81.
During which interval is the object not moving?
a)
B to C
b)
C to D
c)
D to E
d)
only at point A
82.
Which runner stopped for a rest?
a)
Albert
b)
Bob
c)
Charlie
83.
This is a velocity-time graph.  What is the object doing in segment A?
a)
Positive acceleration
b)
Negative acceleration
c)
Constant Velocity
d)
Not moving
84.
Calculate the acceleration for segment A.
a)
2 m/s2
b)
20 m/s2
c)
-2 m/s2
d)
0 m/s2
85.
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
86.
According to the graph how fast does the person travel in the first 5 seconds?
a)
2 m/s
b)
10 m/s
c)
12.5 m/s
d)
1 m/s
87.
Acceleration of an object happens when things ________
a)
slow down
b)
go faster
c)
change direction (turn)
d)
All of the above
88.

If a puppy runs for 50 meters in 10 seconds , what was the puppies speed in kilometer per hour?

a)

5 m/s

b)

18m/hr

c)

18 km/s

d)

18 km/hr

89.

A car’s initial velocity was 10m/s and the final velocity was 25m/s. Which type of acceleration is this?

a)

a. Positive acceleration.

b)

b. Negative acceleration.

c)

c. Zero Acceleration

d)

d. None

90.

An object started from rest at point “A” moved to point “B”. It’s final velocity was 30m/s. What was it’s initial velocity?

a)

a. 30m/s

b)

b. 0m/s

c)

c. 40m/s

d)

d. 60m/s

91.

Which of the following statement is correct regarding velocity and speed of a moving body?

a)

(a) Velocity of a moving body is always higher than its speed

b)

(b) Speed of a moving body is always higher than its velocity

c)

(c) Speed of a moving body is its velocity in a given direction

d)

(d) Velocity of a moving body is its speed in a given direction

92.

If speed of a body is continuously decreasing, the body is said to ……………

a)

a. Retarding

b)

b. Accelerating

c)

c. Constant

d)

d. None

93.

Speed with direction is a ________________ quantity.

a)

a. Scalar

b)

b. Vector

c)

c. Both a. and b.

d)

d. None

94.

If the velocity changes at a non-uniform rate, then it is called ______________.

a)

a. Uniform motion

b)

b. Non-uniform Motion

c)

c. Non-uniform acceleration

d)

d. Non-uniform speed

95.

I have both magnitude and direction. I'm also known as "Speed with direction". Who am I ?

a)

a. Distance

b)

b. Acceleration

c)

c. Velocity

d)

d. Both b. and c.

96.

A player completes a circular path of radius r in 40 s. At the end of 2 minutes 20 seconds. Displacement will be:

a)

7πr

b)

Zero

c)

2r

d)

2πr

97.

A particle is moving in a circular path of radius r. The displacement  after half a circle would be: 

a)

Zero  

b)

πr

c)

 2r 

d)

2πr

98.

Which of the following can sometimes be ‘zero’ for a moving body?

i. Average velocity

ii. Distance travelled

iii. Average speed

iv. Displacement

a)

Only (i)

b)

(i) and (ii)

c)

(i) and (iv)

d)

Only (iv)

99.

Which of the following statement is correct regarding velocity and speed of a moving body?

a)

Velocity of a moving body is always higher than its speed

b)

Speed of a moving body is always higher than its velocity

c)

Speed of a moving body is its velocity in a given direction

d)

Velocity of a moving body is its speed in a given direction

100.

When a car driver travelling at a speed of 10 m/s applies brakes and brings the car to rest in 20 s, then the retardation will be:

a)

+ 2 m/s2

b)

− 2 m/s2

c)

− 0.5 m/s2

d)

+ 0.5 m/s2

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