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eithzyd1648
06.12.2019 •
Physics
Anaya goodloe decides to spike the football after a big touchdown (on earth) and it
bounces back up off the ground and is airborne for 3.2 seconds. with what velocity did the football leave the ground after the spike?
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Ответ:
The football leaves with the velocity, u = 15.68 m/s
Explanation:
Given data,
The football bounces back up off the ground and is airborne for, t = 3.2 s
Let the football bounces back up off the ground in the vertical direction
The formula for time of flight is given by,
t = 2u /g
∴ u = gt / 2
Substituting the values,
u = 9.8 x 3.2 / 2
u = 15.68 m/s
Hence, the football leaves with the velocity, u = 15.68 m/s
Ответ:
the answer would be A
Explanation: