Question

Lightning can be seen as the moment it occurs. Paheli observes lightning in her area. She hears the sound 5 s after she observed lightning. How far is she from the place where lightning occurs? (speed of sound = $330\raisebox{1ex}{$m$}\!\left/ \!\raisebox{-1ex}{$s$}\right.$).

Answer 1

Step 1: Given data

Time elapsed = $5sec$

Speed of sound = $330\raisebox{1ex}{$m$}\!\left/ \!\raisebox{-1ex}{$s$}\right.$

Step 2: Calculations

Distance $\left(S\right)$ = Speed $\left(v\right)$ X time $\left(t\right)$

$S=v.t$

= $330\times 5=1650m$

Hence, Paheli is $1650m$ away from where lightning occurs.