Question

2d= v×t derivation ​

Answer 1

speed = distance/time

distance = speed × time

d=v×t

as here distance is double,

2d=v×t

Answer 2

Explanation:

• We know that the distance covered by an object is given by the product of its velocity and time taken.
• For the sound wave, while studying echo, the total distance covered by sound is 2d i.e. d for the going of sound back and again d for the sound wave after reflection.
• In such case, the total distance is 2d such that,

$2d=v\times t$

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