Question

A bus was moving with a speed of 54 km/h. On applying brakes, it stopped in 8 seconds. Calculate the acceleration and the distance travelled before stopping.

Answer 1

Hey friend

here is your answer

initial velocity ( v ) = 54km / hr or 15 m/sec
final velocity ( u ) = 0 m/sec
time ( t ) = 8 second

acceleration ( a ) = ? (to find )


as
$a = \frac{v - u}{t} \\ a = \frac{0 - 15}{8} \\ a = \frac{ - 15}{8} \\ a = - 1.875 \: m {sec}^{ - 2}$
there acceleration = -1.875 m/sec × sec


glad to help you
hope it helps
thank you.