the distance travelled by a body is directly proportional to time taken .then its acceleration is decreasing. justify?

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Solution

Distance is proportional to time taken
s ∝ t
when can write the displacement as
s = kt
where k is the constant of proportinality.

velocity(v) is given by

v = s/t

v = kt/t = k

Hence, velocity is constant.

Acceleration is defined as the rate of change of velocity,
If velocity is constant then acceleration is zero.

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