Question

a car is moving with a speed of 30m/sec comes to rest in 1 min after the breaks are applied calculate its acceleration​

Answer 1

Explanation:

By newton 1st law of motion

V=u +at

final velocity is zero

u=30m/s

t=60 sec

Hence after putting values

a= -0.5m/s2

negative sign indicates retardatio

Hope it helps you out