Question

the brakes applied to a car produces uniform retardation of 0.5 m/ second square the car covers a distance of 16m before stopping. how long were the brakes applied ​

Answer 1

Answer:

Breaks applied to a car produce uniform retardation of 0.9m/ssquare if the car was travelling with the velocity 27m/s what distance will it cover before coming to rest?

Ask for details Follow Report by Utkarshagarwal1804 24.10.2017

Answers

PiyushRaj1

PiyushRaj1 Expert

When the brakes are applied to a car produced a uniform retardation of 0.9 m/s2 if the car was travelling with velocity of 27 m/s:

v = 0 m/s

u = 27 m/s

a = -0.9 m/s2

To find out the distance travelled by the car, S before coming to rest we will use Newton's third equation of motion

v2 - u2 = 2aS, so 0^2-27^2=2*-0.9*S, so, 0-729=-1.8*S,or ,-729/-1.8=S,or, S=405 km.