Question

Answer This Question ​

Answer 1

Answer:

$100m {s}^{ - 2}$

Explanation:

$given \: \: u = initial \: velocity \: = 40m {s}^{ - 1} \\ v \: = final \: velocity \: = 0 \: (since \: the \: body \: came \: to \: rest) \\ s = displacement \: = 8m \\ we \: know \: that \: {v}^{2} - {u}^{2} = 2as \\ {0}^{2} - {40}^{2} = 2(a)(8) \\ - 1600 = 16a \\ a \: = 100 m {s}^{ - 2} \\ there \: fore \: the \: acceleration \: experienced \: i \: - 100m {s}^{ - 2} \\ and \: retardation \: = - a = - ( - 100) = 100m {s}^{ - 2}$

hope this helps u.......

mark me as BRAINLIEST......

FOLLOW ME.....

JAI HINDH......