Question

5
A bus is travelling at 72 kmlhr
breaks are applied and the
bus comes to a stop after
10m. Find the retardation on the
brakes​

Answer 1

Answer:

A bus is travelling at 72 kmlhr

breaks are applied and the

bus comes to a stop after

10m. Find the retardation on the

brakes

Answer 2

Answer:

Retardation = -20 m /sec²

given : u = 72km/hr = 72×5/18 => 20 m/sec

s = 10 m, v = 0

to find : retardation

formula used : v² - u² = 2as

=> o² - 20² = 2×a×10

=> - 400 = 20 × a

=> a = -400/20

=> a = -20 m/sec²