Motion - Multiple Choice Test


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Question 1

Question:   1 km/h = _____ m/s

1.
2.
3.
4.

 

Answer:   1

Question 2

Question:   The distance (s) in metres travelled by a particle is related to time (t) in seconds by the equation of motion -S = 10t + 4t2. What is the initial velocity of the body?

1. 10 m/s
2. 6 m/s
3. 4 m/s
4. 10 m/s2

 

Answer:   1

Question 3

Question:   For the equation - S = 10t + 4t2 what is the acceleration of the body?

1. 8 m/s2
2. 10 m/s2
3. 4 m/s2
4. 8 m/s

 

Answer:   1

Question 4

Question:   A body moving along a straight line at 20 m/s decelerates at the rate of 4 m/s2. After 2 seconds its speed will be equal to

1. 8 m/s
2. 12 m/s
3. 16 m/s
4. - 12 m/s

 

Answer:   2

Question 5

Question:   Give the equation of motion connecting u, v, a and s where the symbols have their usual meaning

1. v = u + at
2.
3. v2 - u2 = 2aS
4.

 

Answer:   3

Question 6

Question:   An object moving with a speed of 5 m/s comes to rest in 10 s, after the brakes are applied. What is the initial velocity?

1. zero
2. 5 m/s
3. 15 m/s
4. 50 m/s

 

Answer:   2

Question 7

Question:   A body moving along a straight line at 40 m/s undergoes an acceleration of 4 m/s2. After 10 seconds its speed will be

1. 20 m/s
2. 28 m/s
3. 16 m/s
4. 80 m/s

 

Answer:   4

Question 8

Question:   SI unit of acceleration is __________.

1.
2.
3.
4.

 

Answer:   1

Question 9

Question:   Retardation is __________.

1. negative acceleration
2. positive acceleration
3. uniform acceleration
4. variable acceleration

 

Answer:   1

Question 10

Question:   When an object is moving with uniform velocity, what is its acceleration?

1. zero
2. uniform
3. non-uniform
4. negative

 

Answer:   1

Question 11

Question:   In the case of a rectilinear uniform motion, distance-time graph is a

1. parabola
2. straight line
3. curved line
4. rectangle

 

Answer:   2

Question 12

Question:   Speed of 90 km/h when expressed in m/s is .

1. 2.5
2. 25
3. 250
4. 90000

 

Answer:   2

Question 13

Question:   When a graph of one quantity versus another results in a straight line, the quantities are .

1. directly proportional
2. constant
3. inversely proportional
4. independent of each other

 

Answer:   1

Question 14

Question:   What does the following S-t graph indicate?

1. uniform speed
2. body is at rest
3. non-uniform speed
4. variable speed

 

Answer:   2

Question 15

Question:   What do you infer, if S-t graphs of two cyclists meet at a point?

1. They collide
2. They pass each other
3. They are at rest
4. They are starting from rest

 

Answer:   2

Question 16

Question:   Name the physical quantity which we get from a S-t graph.

1. Speed
2. Displacement
3. Distance
4. Time

 

Answer:   1

Question 17

Question:   What is the SI unit of speed?

1. km/h
2. m/s
3. m/min
4. km/s

 

Answer:   2

Question 18

Question:   What is the distance covered by a car in 5 h if it is moving with a speed of 35 km/h?

1. 175 km
2. 150 km
3. 7 km
4. 1750 km

 

Answer:   1

Question 19

Question:   The S-t graph for uniform speed is

1.
2.
3.
4.

 

Answer:   2

Question 20

Question:   The average speed of a car which covers half the distance with a speed of 20 m/s and other half with a speed of 30 m/s in equal intervals of time is _________.

1. 25 m/s
2. 0 m/s
3. 24 m/s
4. 2.4 m/s

 

Answer:   1

Question 21

Question:   Displacement is a ________ quantity.

1. scalar
2. vector
3. derived
4. linear

 

Answer:   2

Question 22

Question:   km / h2 is a unit of ________ .

1. velocity
2. speed
3. acceleration
4. distance

 

Answer:   3

Question 23

Question:   The speed-time graph for a particle moving at constant speed is a straight-line ________ to the time axis.

1. parallel
2. perpendicular
3. aligned
4. inclined

 

Answer:   1

Question 24

Question:   When an object moves in a fixed direction with uniform acceleration, the speed-time graph is a ________.

1. parabola
2. straight line
3. ellipse
4. curve

 

Answer:   2

Question 25

Question:   The area under the speed-time graph gives the ________.

1. distance
2. velocity
3. time
4. acceleration

 

Answer:   1

Question 26

Question:   A speed of 90 km/h, expressed in cm s-1 is ________.

1. 2.5
2. 2500
3. 300
4. 90

 

Answer:   2

Question 27

Question:   When an object of mass 5 kg starts from rest, what is its initial velocity?

1. 0
2. - 5 m/s
3. variable
5
4. 1 m/s

 

Answer:   1

Question 28

Question:   Identify the v- t graph representing uniform velocity.

1.
2.

3.
4.

 

Answer:   2

Question 29

Question:   Name the physical quantity that is defined as the rate of change of displacement.

1. velocity
2. acceleration
3. distance
4. speed

 

Answer:   1

Question 30

Question:   An object moves with a constant velocity of 9.8 m/s, its acceleration in m s-2 is ________.

1. 9.8 m/s2
2. zero
3. 0.98 m/s
4. 98 m/s2

 

Answer:   2

Question 31

Question:   In 12 minutes a car whose speed is 35 km/h travels a distance of

1. 7 km
2. 3.5 km
3. 14 km
4. 28 km

 

Answer:   1

Question 32

Question:   A body moving along a straight line at 20 m/s undergoes an acceleration of 4 m/s2. After two seconds its speed will be ________.

1. 8 m/s
2. 12 m/s
3. 16 m/s
4. 28 m/s

 

Answer:   4

Question 33

Question:   A car increases its speed from 20 km/h to 50 km/h in 10 seconds. Its acceleration is ________.

1. 30 m/s2
2. 3 m/s2
3. 18 m/s2
4. 0.83 m/s2

 

Answer:   4

Question 34

Question:   When the distance covered by an object is directly proportional to time, it is said to travel with ________.

1. zero velocity
2. constant speed
3. constant acceleration
4. uniform acceleration

 

Answer:   2

Question 35

Question:   Negative acceleration means an object is moving with ________ .

1. increasing speed
2. decreasing speed
3. uniform speed
4. constant speed

 

Answer:   2

Question 36

Question:   Motion along a straight line is called __________ motion.

1. rectilinear motion
2. circular motion
3. oscillatory motion
4. parabolic

 

Answer:   1

Question 37

Question:   Distance-time graph is a straight line for __________ motion.

1. variable
2. non uniform
3. rectilinear
4. circular

 

Answer:   3

Question 38

Question:   A car is moving with a speed of 36 km/h. Its speed in m/s is _______.

1. 10
2. 100
3. 2
4. 1

 

Answer:   1

Question 39

Question:   A car starts from rest and covers a distance of 100 m in one second with uniform acceleration. Its acceleration is _________.

1. 100 m/s2
2. 50 m/s2
3. 200 m/s2
4. 100 m/s

 

Answer:   1

Question 40

Question:   Which of the following is a vector quantity?

1. area
2. length
3. distance
4. displacement

 

Answer:   4

Question 41

Question:   The slope of a v-t graph gives ________.

1. acceleration
2. velocity
3. speed
4. distance

 

Answer:   3

Question 42

Question:   The physical quantity describing motion and whose measure is the product of distance travelled and the time taken to travel that distance is ________.

1. speed
2. mass
3. weight
4. displacement

 

Answer:   1

Question 43

Question:   If you are travelling with a velocity of 25 m/s, how long will you take to travel 700 m?

1. 25 s
2. 28 s
3. 25 min
4. 2.8 s

 

Answer:   2

Question 44

Question:   Name the instrument used to measure instantaneous speed of a vehicle.

1. accelerator
2. speedometer
3. ammeter
4. multimeter

 

Answer:   2

Question 45

Question:   A body covers a distance S in time t. What is its speed?

1. S/t
2. t/S
3. S x t
4. Zero

 

Answer:   1



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