Kinematics (KVPY Stream SB-SX (Class 12 & 1st Year BSC) Physics): Questions 11 - 13 of 13

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Question number: 11

» Kinematics » Motion in a Straight Line

MCQ▾

Question

A rocket is fired upward from the earth’s surface such that it creates an acceleration of 17.8ms2 . If after 6 s, its engine is switched off, the maximum height of the rocket from earth’s surface would be – (Assume gravitation field is uniform)

Choices

Choice (4) Response

a.

902 m

b.

486 m

c.

245 m

d.

850 m

Question number: 12

» Kinematics » Uniform and Non-Uniform Motion

Appeared in Year: 2013

MCQ▾

Question

A block of mass m slides from rest at a height H on a frictionless inclined plane as shown in the figure. It travels a distance d across a rough horizontal surface with coefficient of kinetic friction µ, and compresses a spring of spring k by a distance x before coming to rest momentarily. Then the spring extends and the block travels back attaining a final height of h. Then –

A block of mass m slides from frictionless inclined plane

A Block of Mass M Slides From Frictionless Inclined Plane

In figure a block of mass m slides from rest at height H on a frictionless inclined plane. It also travels a distance d across a rough horizontal surface, and compresses a sprig.

Choices

Choice (4) Response

a.

h=H+2μ(d+x)

b.

h=H2μ(d+x)+kx22mg

c.

h=H2μ(d+x)

d.

h=H2μd+kx2mg

Question number: 13

» Kinematics » Uniform and Non-Uniform Motion

MCQ▾

Question

An 8 kg block of ice, released from rest at the top of a 2.1 m long smooth ramp, slides down and falls with a velocity 3.3 ms-1. Find angle of the ramp with horizontal.

Choices

Choice (4) Response

a.

220

b.

260

c.

150

d.

120

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