motion MCQs

Consider the following statements.
I. Negative acceleration means velocity increasing with time.
II. A body is said to have non-uniform acceleration, if either magnitude or direction or both of them change during motion.
III. Zero acceleration means, velocity is uniform.
Which of the statements given above is/are correct?
(a) I and II
(b) II and III
(c) I and III
(d) Only II
View Answer
Correct Answer: (b)
Assertion (A) A body having non-zero acceleration can have a constant velocity.
Reason (R) Acceleration is the rate of change of velocity.
Codes
(a) Both A and R are true and R is the correct explanation of A
(b) Both A and R are true, but R is not the correct explanation of A
(c) A is true, but R is false
(d) A is false, but R is true
View Answer
Correct Answer: (d)
Match List I with List II and select the correct answer using the codes given below the lists.
List I
A. Speed
B. Velocity
C. Acceleration
List II
1. The role change of displacement with time
2. The rate of distance covered with time
3. The time rate of change of velocity
Codes
A B C
(a) 1 2 3
(b) 2 3 1
(c) 2 1 3
(d) 3 2 1
View Answer
Correct Answer: (c)
In the equation of motion v=u+at, u represents ……….. .
(a) initial velocity
(b) final velocity
(c) kinetic energy
(d) potential energy
View Answer
Correct Answer: (a)
The first equation of motion gives the relation between
(a) position and time
(b) velocity and time
(c) position and velocity
(d) velocity and acceleration
View Answer
Correct Answer: (b)
A racing car accelerates on a straight line from rest to a speed of 50 m/s in 25s. Assuming uniform acceleration of the throughout, the distance covered in this will be
(a) 625 m
(b) 1250 m
(c) 2500 m
(d) 50 m
View Answer
Correct Answer: (a)
The second equation of motion gives the relation between
(a) velocity and time.
(b) position and time.
(c) position and velocity.
(d) velocity and acceleration.
View Answer
Correct Answer: (b)
If an object moves at a non-zero constant acceleration for a certain interval of time, then the distance it covers in that time
(a) depends on its initial velocity.
(b) is independent of its initial velocity.
(c) increases linearly with time.
(d) depends on its initial displacement.
View Answer
Correct Answer: (a)
A particle moves with uniform acceleration along a straight line from rest. The percentage increase in displacement during 6th compared to that in 5th is about
(a) 11%
(b) 22%
(c) 33%
(d) 44%
View Answer
Correct Answer: (b)
The motion of a freely falling body is an example of ……….. accelerated motion.
(a) non-uniformly
(b) uniformly
(c) uniquely
(d) specially
View Answer
Correct Answer: (b)

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