Question

A car start from rest and accelerate uniformly until it reaches a velocity of 30m/s after 5sec .it travels with uniform velocity from 15sec and is then brought to rest in 10sec with a uniform retadiation determining
1.acceleration of the car
2.the retadiation
3.the distance cover after 5sec
4. the total distance cover
solve

Answer 1

#1. 30m/s / 5sec = 6m/s^2
#2. twice the time, so -3m/s^2
#3. s = 1/2 at^2
#4. (1/2 * 6 * 5^2) + (30*15) + (30*10 - 1/2 * 3 * 10^2) = _____ m