Question

A bus decreases it's speed from 80km/h to 50km/h is 4 s. Find the acceleration of the bus.

Answer 1

Explanation:

v = 50

u = 80

t = 4 s

a = v - u / t = 50-80/4s = -30 × 60× 60/4 = -27000

Answer 2

Answer:

u = 80 km

v= 50km

t= 4 s

v=u+at

a=v-u/t

a=50-80/4

=-30/4

=-7.5

so acceleration equal to - 7.5 kmper second