Kinematics-Motion in a Straight Line (KVPY Stream SB-SX (Class 12 & 1st Year BSC) Physics): Questions 1 - 4 of 4

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Question number: 1

» 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 20.2ms2 . If after 10 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.

2860 m

b.

3050 m

c.

2000 m

d.

2980 m

Question number: 2

» Kinematics » Motion in a Straight Line

MCQ▾

Question

A 1.5 kg object travelling with uniform acceleration covers 16 m in 4th second and 20 m in 5th second. Which of the following is correct?

Choices

Choice (4) Response
a.

The force on the object is 6N.

b.

The initial velocity of the object is 2 ms-1

c.

The acceleration of the object is 4 ms-2.

d. All a. , b. and c. are correct

Question number: 3

» Kinematics » Motion in a Straight Line

Appeared in Year: 2015

MCQ▾

Question

A boy is standing on top of a tower of height 85 m and throws a ball in the vertically upward direction with a certain speed. If 5.25 seconds later he hears the ball hitting the ground, then the speed with which the boy threw the ball is (take g=10ms2 , speed of sound in air =340ms )

Choices

Choice (4) Response
a.

6ms

b.

12ms

c.

10ms

d.

8ms

Question number: 4

» 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

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