a boy stand 66.4 metres in front of a building and then blows a wistlr in how much time interval he can hear an echo (speed =332 m/s)
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➧ d ➾ 66.4 m
➧ v ➾ 332 m/s
➧ t ➾ ?
❱ v = 2d / t
332 = 2 × 66.4 / t
t = 2 × 66.4 / 332
➾ 0.4 sec ...✔
_________ Thanks...✊
➧ d ➾ 66.4 m
➧ v ➾ 332 m/s
➧ t ➾ ?
❱ v = 2d / t
332 = 2 × 66.4 / t
t = 2 × 66.4 / 332
➾ 0.4 sec ...✔
_________ Thanks...✊
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