A car decreases its speed from 80 km/h to 60 km/h is 5 second. The acceleration of the car is :
The correct option is
A
-1.11 m/s2
Here,
u=80km/h=80×518=22.22ms−1
v=60km/h=60×518=16.67ms−1
t = 5s
Using, a = v − ut
a = 16.67 − 22.225 m/s2
a = - 1.11 m/s2