Question

A bike while traveling with a speed of 72 km per h, the brakes were applied and it stopped in 6s. Find the distance traveled by the bike after the brakes were applied. ​

Answer 1

Answer:

given. u = 72 km/hr = (72*5)/18 = 20 m/sec

v = 0, t = 6 sec, s = ?

v = u + at

0 = 20 + a*6

=> a = -20/6 = -10/3 m/sec²

v² - u² = 2as

0 - 20² = 2*(-10/3)*s

=> -400 = -20/3 *s

=> s = -400*-3/20

=> s = 60 m

bike travels 60 m before coming to a stop