Question

A 60m long train moving on a straight level track passes a pole in 5s.find (a) the speed of train (b) the time it will take to cross a 540m long bridge

Answer 1

Thanks for asking the question.
(a) d=100m
      t=5sec
      v=?
   Therefore,
                    v=d\t
                       =100\5
                       =20m\s
(b) d=500m
      t=?
      v=20m\s
Therefore,
                  v=d\t
                   t=d\v
                    =500\20
                    =25sec
Hope it helps.