Question

A car decreases it's speed from 80km/h to 60km/h in 5seconds find the acceleration of car​

Answer 1

Answer:4m/s2

Step-by-step explanation:

initial velocity u=80km/h

Final velocity v=60 km/h

t=5s

Acceleration a=(v-u)/t

=80-60/5

=20÷5=4m/s2

Answer 2

Answer:

-1.12 m/s^2

Step-by-step explanation:

given:

u= 80 km/hr =22.3 m/s

v =60 km/hr = 16.7 m/s

t= 5s

a= (16.7-22.3)/5

= -1.12 m/s^2