Question

Calculate the time (in hr) taken by a car travelling at a speed of 10 meter per second travel a distance of 72 km?​

Answer 1

Answer:

First of all Convert speed into km /hr which results in 36km/hr then apply time formula which results in 2 hrs

Answer 2

Answer:-

T = 2s

Given:-

S = 72 km

V = 10 m/s

To find:-

Time taken in hr.

Solution :-

First change it in to Km/hr by multiply with $\dfrac {18}{5}$

$10 \times \dfrac {18}{5}$

$36 km/hr$

Now,

Time travelled is given by formula :-

$\boxed{\sf{ S = V. T}}$

put the given value,

$72 = 36 . T$

$T = \dfrac {72}{36}$

$T = 2s$

hence, time taken will be 2 s.