Question

a train starting from rest attains a velocity of 20m/sec in 2 min assuming that the acceleration is uniform find the acceleration and the distance traveled by the train while it attained its velocity

Answer 1

here,

u = 0

v = 20 m/s

t = 2 min = 120 secs.

thus, acceleration will be

a = (v-u) / t

or

a = 20/120 = 0.166666 m/s²

the distance travelled will be

s = (v² - u²) / 2a [from v2-u2 = 2as]

thus,

s = 20² - 0 / (2x0.166)

or

s = 1204.8 m