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Question (21)

QN003621

A force of 90 N produces acceleration of 6 m/s². The mass of body is:

(A) 12 kg
(B) 15 kg
(C) 18 kg
(D) 540 kg

Correct Answer: B

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Question (22)

QN003622

A lighter object accelerates more because it has:

(A) Greater inertia
(B) Smaller mass
(C) Greater momentum
(D) Higher density

Correct Answer: B

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Question (23)

QN003623

A body of mass 4 kg moving with velocity 3 m/s has momentum:

(A) 1 kg m/s
(B) 7 kg m/s
(C) 12 kg m/s
(D) 24 kg m/s

Correct Answer: C

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Question (24)

QN003624

If acceleration becomes zero, the net force acting is:

(A) Maximum
(B) Infinite
(C) Zero
(D) Negative

Correct Answer: C

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Question (25)

QN003625

A car of mass 1000 kg accelerates at 2 m/s². Net force acting is:

(A) 500 N
(B) 1000 N
(C) 2000 N
(D) 4000 N

Correct Answer: C

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Question (26)

QN003626

Which quantity remains constant if no force acts on a moving body?

(A) Momentum
(B) Density
(C) Pressure
(D) Temperature

Correct Answer: A

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Question (27)

QN003627

A force of 24 N acts on a 3 kg object. Acceleration produced is:

(A) 6 m/s²
(B) 8 m/s²
(C) 12 m/s²
(D) 72 m/s²

Correct Answer: B

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Question (28)

QN003628

Why are airbags used in cars?

(A) To increase force
(B) To reduce momentum
(C) To increase stopping time and reduce force
(D) To increase acceleration

Correct Answer: C

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Question (29)

QN003629

A body of mass 15 kg accelerates at 4 m/s². Force acting is:

(A) 19 N
(B) 60 N
(C) 75 N
(D) 11 N

Correct Answer: B

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Question (30)

QN003630

Momentum is a vector quantity because it has:

(A) Only magnitude
(B) Only direction
(C) Magnitude and direction
(D) Density and pressure

Correct Answer: C

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Question (21)

A force of 90 N produces acceleration of 6 m/s². The mass of body is:

Explanation:

Link:

Question (22)

A lighter object accelerates more because it has:

Explanation:

Link:

Question (23)

A body of mass 4 kg moving with velocity 3 m/s has momentum:

Explanation:

Link:

Question (24)

If acceleration becomes zero, the net force acting is:

Explanation:

Link:

Question (25)

A car of mass 1000 kg accelerates at 2 m/s². Net force acting is:

Explanation:

Link:

Question (26)

Which quantity remains constant if no force acts on a moving body?

Explanation:

Link:

Question (27)

A force of 24 N acts on a 3 kg object. Acceleration produced is:

Explanation:

Link:

Question (28)

Why are airbags used in cars?

Explanation:

Link:

Question (29)

A body of mass 15 kg accelerates at 4 m/s². Force acting is:

Explanation:

Link:

Question (30)

Momentum is a vector quantity because it has:

Explanation:

Link:

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