Home Physics Motion in a Straight Line All Topic Question for Revision Test A point initially at rest moves along -axis…
Physics Motion in a Straight Line All Topic Question for Revision Test MCQ (Single Correct)

A point initially at rest moves along -axis. Its acceleration varies with time as

. If it starts from origin, then the distance covered in 2 s is

A
20 m
B
18 m
C
16 m
D
25 m

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Text Solution

Verified by Experts
The correct answer is:
B

Given, acceleration

Integrating it, we have

, where is a constant of integration.
when so

Integrating it within the conditions of motion, i.e., as changes from 0 to changes from 0 to s, we have

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