A football is kicked at an angle of 45° to the horizo...
A football is kicked at an angle of 45° to the horizontal over a defense line up with a velocity of 15ms−1. Calculate the magnitudeof horizontal velocity of the ball at its highest point [Neglect friction, g = 10ms−2].
0.0ms−1
5.6ms−1
10.6ms−1
15.0ms−1
Correct answer is C
The horizontal component of velocity, Vx, is unaffected by the acceleration of free fall and remains constant.
Vx=Ux=Ucosθ
= 15×cos45=15×0.7071
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