Kinematics-Uniform and Non-Uniform Motion (NEET Physics): Questions 10 - 14 of 15

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Question number: 10

» Kinematics » Uniform and Non-Uniform Motion

Assertion-Reason▾

Assertion (Ꭺ)

If the net external force on the body is zero then its acceleration is zero.

Reason (Ꭱ)

Acceleration does not depend on force.

Choices

Choice (4) Response

a.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

b.

Both Ꭺ and Ꭱ are false

c.

Ꭺ is true but Ꭱ is false

d.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

Question number: 11

» Kinematics » Uniform and Non-Uniform Motion

MCQ▾

Question

A force of ( 6i^+8j^ ) N acted on a body of mass 10 kg. The displacement after 10 sec, if it starts from rest, will be -

Choices

Choice (4) Response

a.

10 m along tan143 with x axis

b.

50 m along tan143 with x axis

c.

70 m along tan143 with x axis

d.

None of the above

Passage

Pseudo force is an imaginary force which is recognized only by a non-inertial observer to explain the physical situation according to newton’s laws. Magnitude of pseudo force F is equal to the product of the mass m of the object and the acceleration a of the frame of reference. The direction of the force is opposite to the direction of acceleration, F =-ma

Question number: 12 (1 of 2 Based on Passage) Show Passage

» Kinematics » Uniform and Non-Uniform Motion

MCQ▾

Question

A body is suspended by a string from the ceiling of an elevator. It is observed that the tension in the string is doubled when the elevator is accelerated. The acceleration will be -

Choices

Choice (4) Response

a.

9.8 m/s 2

b.

4.9 m/s 2

c.

2.45 m/s 2

d.

19.6 m/s 2

Question number: 13 (2 of 2 Based on Passage) Show Passage

» Kinematics » Uniform and Non-Uniform Motion

MCQ▾

Question

A 25 kg lift is supported by a cable. The acceleration of the lift when the tension in the cable is 175 N, will be –

Choices

Choice (4) Response

a.

- 9.8 m/s 2

b.

2.8 m/s 2

c.

14 m/s 2

d.

16.8 m/s 2

Question number: 14

» Kinematics » Uniform and Non-Uniform Motion

MCQ▾

Question

A fire man has to carry an injured person of mass 30 kg from the top of a building with the help of the rope which can withstand a load of 150 kg. The acceleration of the

Fireman if his mass is 50 kg, will be

Choices

Choice (4) Response

a.

17.97 m/s 2

b.

9.8 m/s 2

c.

8.575 m/s 2

d.

2.63 m/s 2

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