Question

33. A bus moving along a straight highway with a speed of 60km/hr is brought to stop within a
distance of 200m. What is the retardation and how long does it take for the bus to stop?​

Answer 1

Explanation:

U=60=60*5/18=16.7m/s

V=0

s=200m

$2as = v {}^{2} - u {}^{2}$

$v {}^{2} - u {}^{2} \div 2s = a$

a=0-17*17/2*200

a=-289/400

Answer 2

Answer:

u=60km/hr=50/3 m/s

v=0

s=200m

v²=u²+2as

0=2500/9+2×a×200

-2500/9=400a

a=0.69m/s ~ 0.7m/s