Science, asked by j6ellonicgopratehw, 1 year ago

When a body starts from rest, the acceleration of the body after 2 seconds is _______
of its displacement. (half, twice, four times, one-fourth)

TNSCERT Class 9 General Science Ch 6 Motion

Answers

Answered by tony47
29
half

cuz acceleration=displacement/time
Answered by muscardinus
3

Explanation:

Let s is the displacement of the body. The formula that relates the acceleration, displacement and the velocity is given by :

s=ut+\dfrac{1}{2}at^2

The body is at rest initially, u = 0. Put t = 2 sec in above formula as :

s=0+\dfrac{1}{2}a(2)^2

s=2a

a=\dfrac{s}{2}

So, when a body starts from rest, the acceleration of the body after 2 seconds is  half of its displacement. Hence, this is the required solution.

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