Question

A train is travelling at a speed of
90 km h-!. Brakes are applied so
as to produce a uniform
acceleration of - 0.5 m s2. Find
how far the train will go before it
is brought to rest.
bile going down an​

Answer 1

Answer:

49m

Explanation:

Using identity :

$s = ut + \frac{1}{2} a {t}^{2}$

$s =25 \times 2 + \frac{1}{2} \times \frac{ - 1}{2} \times 2 \times 2 = 50 - 1 = 49m$