NSTSE (National Science Talent Search Exam- Unified Council) Class 9: Questions 1460 - 1464 of 2000

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Question number: 1460

» Physics » Motion

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Question

From a top of a tower of height , a boy projects a ball vertically upwards with an initial velocity of such that it eventually falls to the ground. At what time will the ball reach the ground?

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Choice (4)Response

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Question number: 1461

» Physics » Motion

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A ball is thrown vertically upwards with an initial velocity of . The time taken by the ball to strike the ground is –

(Acceleration due to gravity is )

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Choice (4)Response

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Question number: 1462

» Physics » Force & Laws of Motion

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Two bodies of masses and are moving along the same line and direction with velocity of and , respectively. They collide and after the collision, the first body moves at a velocity of . Determine the velocity of the second body.

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Question number: 1463

» Physics » Work, Energy & Power

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A bullet penetrate in a block up to 32 cm and its velocity decreased to . Then the additional thickness it will penetrate in cm before coming to rest is:

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Question number: 1464

» Physics » Sound

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A girl is standing between two hills and shouted loudly. If she hear first echo after and second echo after , then the distance between two hills is:

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Choice (4)Response

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