Seconds 15853

The body landed on Earth in 9 seconds.
Find from what height it fell and what its speed was on impact.

Correct answer:

h =  397.305 m
v =  88.29 m/s

Step-by-step explanation:

t=9 s g=9.81 m/s2  h=21 g t2=21 9.81 92=397.305 m
v=g t=9.81 9=88.29 m/s

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