Asked by Anonymous
a football is kicked at a velocity of15m/s
at an angel of 25 to the horizontal.calculate:a)the total flight time
at an angel of 25 to the horizontal.calculate:a)the total flight time
Answers
Answered by
Anonymous
Just do the vertical part of the problem. You do not care how fardown the field it goes
Vi = initial speed up = 15 sin 25 = 6.34 m/s up (pathetic kick)
v = Vi - g t = 6.34 - 9.81 t
v = 0 at top
9.81 t = 6.34
t = 0.646
now it has to fall for the same t
so
2t = time in air = 1.29 seconds
Vi = initial speed up = 15 sin 25 = 6.34 m/s up (pathetic kick)
v = Vi - g t = 6.34 - 9.81 t
v = 0 at top
9.81 t = 6.34
t = 0.646
now it has to fall for the same t
so
2t = time in air = 1.29 seconds
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