Question

hey answer this i will mark you as brainliest . a bus decreases its speed from 80km per hour to 60km per hour in 5 seconds. find the acceleration in km per hour square.

Answer 1

u = 80 kmph
v = 60 kmph
t = 5s or 5/60 minutes or 5/60 *60 = 5/3600
= 0.001388 hours

a = (v - u)/t = (60-80)/0.001388 = -20/0.001388

= -14409.22190201729 km/h square