Question

who answers my question I will mark them as brainliest and I will follow them. ​

Answer 1

u = 40m/s

v = 0m/s {since brakes are applied}

s = 8m

Using equation,

v² -u² = 2as

=>0 -40² = 2×a×8

=>-1600 = 16a

=>-1600/16 = a

=>-100 = a

Acceleration = -100m/s²

Retar dation = 100m/s²

Reta!rdation is just negative acceleration.

Cheers!

Answer 2

HOPE THIS ANSWER HELPS YOU UP !