Question

A train starting from rest covers90 km in 2min find accelaration

Answer 1

Answer:

0.20

Explanation:

intial velocity=0

final velocity=90km,convert it into m\s i.e.90*5/18=25m/s

time=2min i.e.2*60=120s

according To the formula v=u+at

25=0+a(120)

25/120=a

0.20 =a

Answer 2

Answer:

initial velocity (v) -0 because body starts from rest

final velocity (u) -90

acceleration- v-u/t

0-90/2= 90/2 =45

45m/s^2