Question

Train accelerated from 20 kilometre per hour to 80 km per hour in minutes how much distance does it cover in this period assume that the tracks are straight

Answer 1

Answer:

1.32km

Explanation:

given,

v = 80 km/h

u= 20 km/h

t = 4 min = 0.066 hr

v = u+a t

a = v - u/ t

= (80 - 20 )/ 0.066

= 909.09 km/h2

v2-u2 = 2 a s

6400 - 4000 = 2 × 909.09× s

s = 1.32 km

Answer 2

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