Question

Two bodies A and B are moving with a speed of 21 m/s is and 72 km per h respectively whose speed is more explain.​

Answer 1

Answer:

Explanation:

So, speed = distance/time

72/21

3.4m/s

Answer 2

Answer:

speed of A is given as 21 m/s and that of B is 72 km/hr

first of all to compare,we need to convert both speeds to same unit's..

here I am choosing m/s

so Speed(A) = 21m/s

$1 \frac{km}{hr} = \frac{5}{18} \times \frac{m}{s}$

so 72 km/hr = 72×5/18 m/s

=20m/s

now clearly speed of A is more