Question

a train of length 100m. moving with a speed of 60km/hr. passes a tree.how long will it take to do so? ​

Answer 1

Here the length of the train and the speed of the train are given

Length = 100 m

Speed = 60 km/hr

We will first convert the speed into  m/s

$60 km/hr = 60 \times \frac{5}{18}$

               = 4.44 m/s

We have to find the time taken by the train to cross the tree

We will use the formula

$speed = \frac{distance}{time}$

Putting the values in the formula

$4.44=\frac{100}{time}\\\\time = \frac{100}{4.44}\\\\time = 22.52 secs$

So, the time taken will be 22.52 secs.