Question

i didnt understand this question . could someone help me ?​

Answer 1

Explanation:

decelation =5m/s

u=25m/s

v=0m/s

t=?

then;a=(v-u)/t

t=(v-u)/a

but decelation is negative of acceleration

t=(0-25)/-5

t=5s

to find distance

s=ut+1/2at^2

s=25*5+1/2(-5)5^2

s=62.5m