which kind of which kind of which kind of which kind of 1- (35 pts) A tennis bal
ID: 776726 • Letter: W
Question
which kind of which kind of which kind of which kind of 1- (35 pts) A tennis ball is hit with from a height of 0.550 m above the ground. The opposi a speed of 24.1 m/s at an angle of 48.2 above the horizontal part of its motion at a height of 1.23 m above the ground. A) How long is the ball in ing player hits the tennis ball on the the air just before it is hit by the opposing player? 1B) How far does the tennis ball travel horizontally in this time? C) What is the direction of the velocity just before the ball is hit by the opposing player? D) When the ball hits the racket of the other player, does the ball or the racket experience the larger foree? Explain Pictorial Representation athematical RepresentationExplanation / Answer
7. in vertical,
yf - yi = v0y t + ay t^2 / 2
1.23 - 0.550 = (24.1 sin48.2)(t) - 9.8 t^2 /2
4.9 t^2 - 18t + 0.680 = 0
t = 3.64 sec ......Ans(A)
(B) x = (v0x) t
x = (24.1 cos48.2)(3.64)
x = 58.5 m
(C) vx = v0x = 24.1 cos48.2 = 16.1 m/s
vy = v0y - gt = (24.1 sin48.2) - (9.8 x 3.64)
vy = - 17.7 m/s
theta = tan^-1(17.7 / 16.1) = 47.7 deg below horizontal.
(D) they will experience force of same magnitdue.
(from Newton's 3rd law )
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