Question

a car starts from rest and attains a velocity of 10 M per second in 40 seconds the driver applied date and slows down the ka 25 m per second in 10 seconds find the acceleration of the car in both the cases

Answer 1

Acceleration = final + initial.
Velocity velocity / time
A=v-u/t
A=25-10/50
A=15/50
A=3/10 m/s