of y 82 N. The ball is in contact with the bat for t 0.17 s. It is observed that
ID: 1599911 • Letter: O
Question
of y 82 N. The ball is in contact with the bat for t 0.17 s. It is observed that the ball leaves the bat with an angle of 21 degrees with respect to the horizontal. A 50% Part (a) How long was the ball in the air ifit was hit from the top of a cliff with a height of h 121 m. sino coso tano 7 8 9 cotan0 asin0 acoso acotan0 sinho 1 2 3 atan cosh0 Degrees Radians give up! Feedback: on per feedback. 4 50% Part b) How far did the ball travel horizontally in meters? Otheexpertta.co Grade Summary Deductions Potential 1009 Subruissions Attempts remaining per attempt) detailed viewExplanation / Answer
Start with impulse: Ft = mv
82N * 0.17s = 0.42kg * v v =33.2 m/s
So Vx = 33.2m/s * cos21º = 30.99 m/s
and Vy = 33.2m/s * sin21º = 11.89 m/s
(a) vertically: s = So + Vo*t + ½at²
0 = 121 + 11.89t - 4.9t²
is quadratic with solutions at t = -3.901 s, 6.33 s take positive root
t = 6.33
(b) d = Vx*t = 30.99m/s * 6.33s = 196.1667 m 196.17m
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