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Question (11)

QN003231

A body covers 120 m in 24 s. Average speed is

(A) 2 m/s
(B) 5 m/s
(C) 10 m/s
(D) 12 m/s

Correct Answer: B

Explanation:

Speed = distance/time.

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Question (12)

QN003232

An object moves 60 m north in 15 s. Average velocity is

(A) 4 m/s north
(B) 4 m/s
(C) 0 m/s
(D) 15 m/s

Correct Answer: A

Explanation:

Displacement/time with direction.

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Question (13)

QN003233

Initial velocity = 0, acceleration = 3 m/s², time = 4 s. Final velocity equals

(A) 7 m/s
(B) 12 m/s
(C) 16 m/s
(D) 24 m/s

Correct Answer: B

Explanation:

v = u + at

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Question (14)

QN003234

Velocity changes from 10 m/s to 30 m/s in 5 s. Acceleration is

(A) 2 m/s²
(B) 4 m/s²
(C) 5 m/s²
(D) 8 m/s²

Correct Answer: B

Explanation:

a = (v−u)/t

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Question (15)

QN003235

A body starting from rest accelerates at 2 m/s² for 6 s. Distance travelled equals

(A) 18 m
(B) 24 m
(C) 36 m
(D) 72 m

Correct Answer: C

Explanation:

s = ½at²

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Question (16)

QN003236

A train slows uniformly from 20 m/s to rest in 10 s. Acceleration is

(A) −2 m/s²
(B) 2 m/s²
(C) −10 m/s²
(D) 0

Correct Answer: A

Explanation:

Negative sign shows retardation.

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Question (17)

QN003237

Distance travelled when velocity changes from 5 m/s to 25 m/s with acceleration 4 m/s² is

(A) 60 m
(B) 75 m
(C) 80 m
(D) 90 m

Correct Answer: B

Explanation:

v²−u² = 2as

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Question (18)

QN003238

Motion with constant velocity has acceleration

(A) constant
(B) zero
(C) increasing
(D) decreasing

Correct Answer: B

Explanation:

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Question (19)

QN003239

Equal distances covered in equal intervals indicate

(A) accelerated motion
(B) uniform motion
(C) circular motion
(D) random motion

Correct Answer: B

Explanation:

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Question (20)

QN003240

Slope of velocity–time graph represents

(A) speed
(B) displacement
(C) acceleration
(D) distance

Correct Answer: C

Explanation:

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Question (11)

A body covers 120 m in 24 s. Average speed is

Explanation:

Link:

Question (12)

An object moves 60 m north in 15 s. Average velocity is

Explanation:

Link:

Question (13)

Initial velocity = 0, acceleration = 3 m/s², time = 4 s. Final velocity equals

Explanation:

Link:

Question (14)

Velocity changes from 10 m/s to 30 m/s in 5 s. Acceleration is

Explanation:

Link:

Question (15)

A body starting from rest accelerates at 2 m/s² for 6 s. Distance travelled equals

Explanation:

Link:

Question (16)

A train slows uniformly from 20 m/s to rest in 10 s. Acceleration is

Explanation:

Link:

Question (17)

Distance travelled when velocity changes from 5 m/s to 25 m/s with acceleration 4 m/s² is

Explanation:

Link:

Question (18)

Motion with constant velocity has acceleration

Explanation:

Link:

Question (19)

Equal distances covered in equal intervals indicate

Explanation:

Link:

Question (20)

Slope of velocity–time graph represents

Explanation:

Link:

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