Question

a train travelling with uniform acceleration acquires a speed of 40km/hr from 60 km/ hr in 20 minutes find acceleration of train​

Answer 1

Answer:

By kinematic equation

v = u + at

v = final velocity

u = initial velocity

a = uniform acceleration

t = time interval

=> 40 = 60 + a(20/60)

=> -20 = a/3

=>-60 = a

Therefore the acceleration is -60 km/hr the minus sign indicates that the train is deaccelerated