Question

ram covered 10 km in first 1 hour ,20 km in next 1 hour and 40 km in next 1 hour and calculate speed in meter per second​

Answer 1

Answer:

Speed of Ram in m/s = 6.48 m/s (approx)

Step-by-step explanation:

Given :

$\textsf{Ram covered distance in first hour = 10 km}$

$\textsf{Ram covered distance in next hour = 20 km}$

$\textsf{Ram covered distance in next hour = 40 km}$

To find :

The speed of Ram in meter per second

Taken :

First find the speed of Ram in km/hr .

So , to find the speed use this formula -:

$\boxed{\sf{S=\dfrac{D}{T}}}$

Where,

S = Speed

D = Distance

T = Time

So , first find the total distance covered by Ram and total time taken by Ram .

After that to find the speed in m/s use this formula -:

$\boxed{\sf{\dfrac{5}{18}\:\times\:km/hr}}$

Solution :

First in km/hr -:

$:\implies\sf{S=\dfrac{10km+20km+40km}{1hr+1hr+1hr}}$

$:\implies\sf{S=\dfrac{70km}{3hr}}$

$:\implies\sf{S=23.333km/hr}$

Now in m/s -:

$:\implies\sf{\dfrac{5}{18}\:\times\:23.333km/hr}$

$:\implies\sf{6.48m/s}$

So , the speed of Ram in m/s is 6.48 m/s (approx) .