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Question (21)

QN003341

A cyclist moving at 6 m/s accelerates at 2 m/s². Velocity after 7 s equals

(A) 14 m/s
(B) 18 m/s
(C) 20 m/s
(D) 24 m/s

Correct Answer: C

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Question (22)

QN003342

If v² − u² = 2as, increasing displacement increases

(A) acceleration only
(B) velocity change
(C) time only
(D) mass

Correct Answer: B

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Question (23)

QN003343

A car stops from 20 m/s with uniform retardation of 5 m/s². Time taken to stop equals

(A) 2 s
(B) 4 s
(C) 5 s
(D) 10 s

Correct Answer: B

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Question (24)

QN003344

Displacement during stopping equals

(A) 20 m
(B) 30 m
(C) 40 m
(D) 80 m

Correct Answer: C

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Question (25)

QN003345

Which equation directly gives displacement when velocity and time are known?

(A) s = vt
(B) v = u + at
(C) v² = u² + 2as
(D) a = v/t

Correct Answer: A

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Question (26)

QN003346

If a body moves with constant velocity, which equation applies?

(A) s = ut
(B) v = u + at
(C) v² = u² + 2as
(D) s = ½at²

Correct Answer: A

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Question (27)

QN003347

A body moving at 12 m/s accelerates uniformly at 3 m/s² for 4 s. Displacement equals

(A) 48 m
(B) 72 m
(C) 96 m
(D) 120 m

Correct Answer: C

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Question (28)

QN003348

Kinematic equations are independent of

(A) mass of body
(B) time
(C) velocity
(D) displacement

Correct Answer: A

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Question (29)

QN003349

A freely falling object gains velocity due to

(A) friction
(B) gravity
(C) magnetism
(D) pressure

Correct Answer: B

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Question (30)

QN003350

If u = v, then acceleration is

(A) zero
(B) infinite
(C) negative
(D) maximum

Correct Answer: A

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