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17-09-2022
Physics

contestada

I drop a ball from rest , it falls for 7 sec. What speed did the ball reach

Respuesta :

17-09-2022

Answer:

-68.6m/s

Explanation:

after 1 second its velocity is -9.8 m/s. after 2 seconds its velocity is -19.6 m/s. after 3 seconds its velocity is -29.4 m/s.

so 7 multiplied by the velocity for 1 second will give you the answer.

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