Question

A car moving on a constant velocity was decelerated with 1 m/s^2 and stopped in 5 seconds
when the brakes were applied. Calculate the initial velocity of the car.​

Answer 1

a =-1m/sec²

t=5sec

v=0

v=u+at

0=u+5

u=-5

Answer 2

Explanation:

GIVEN

$deceleration = - 1m {s}^{ - 2}$

$final \: velocity \: (v) = 0$

$time(t) = 5s$

$initial \: velocity(u) = u$

$from \: equaion \: of \: motion$

$v = u + at$

$0 = u - 1(5)$

$- u = - 5$

$u = 5m {s}^{ - 1}$

HOPE IT HELPS...