Question

a bus decreases its speed from 80 km per hour to 60 km per hour in 5 seconds find the acceleration of the bus​

Answer 1

u=80km/h

v=60km/h

t=5/60hrs

a=v-u/t

a=(60-80)/(5/60)

solve it and acc =240km/h2

Answer 2

heya your answer is here,

given,

initial velocity= 80 km
final velocity= 60 km

time = 5 sec,

we know that,

$v = u + at$
v-u =at

$a = \frac{v - u}{t}$

$a = \frac{60 - 80}{5}$
a=-20/5
a=-4km/s²