Physics [NSTSE (National Science Talent Search Exam- Unified Council) Class 9]: Questions 12 - 18 of 285

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Question 12

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Question

MCQ▾

Consider a planet, which mass is of mass of earth and its radius is twice of earth’s radius. The weight of an object on that planet, which mass is on the surface of earth, is:

Choices

Choice (4)Response

a.

b.

c.

d.

Question 13

Physics
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Question

MCQ▾

A ball dropped from a building of height . If ball describes during its last second of fall, then the height of the building , and the time of fall are:

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Choice (4)Response

a.

b.

c.

d.

Question 14

Physics
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Question

MCQ▾

The distances travelled by a body falling freely from rest in the second and forth seconds respectively are in the ratio:

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Choice (4)Response

a.

b.

c.

d.

Question 15

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Question

MCQ▾

Potential energy of a particle is , when it is at height from the ground. Then what is the mass of the particle?

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Choice (4)Response

a.

b.

c.

d.

Question 16

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Question

MCQ▾

When a ball reaches the ground, its velocity is , from a height . What is the value of ?

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Choice (4)Response

a.

b.

c.

d.

Question 17

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Question

MCQ▾

The kinetic energy in terms of the momentum is given as:

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Choice (4)Response

a.

b.

c.

d.

None of the above

Question 18

Physics
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Question

MCQ▾

If a freely falling body travels a distance in the last second, equal to the distance travelled by in the first 2 seconds, the approximate time of its travel is:

Choices

Choice (4)Response

a.

b.

c.

d.