A particle moves so that its displacement is metres

MATHEMATICS · Single correct · A Level · Mathematics · Kinematics · Kinematics

Problem

A particle moves so that its displacement is

s(t)=e^{k t^{2}}

metres. If its acceleration at

t=0

10\,\text{m s}^{-2}

, the value of

k

is (a)

10

(b)

5

(c)

2.5

(d)

20