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oa The Expert TA | Human-like Gr x C Secure https://usf16in.theexpertta.com/common/TakeTutorialAssignment.aspx Homework 5 Begin Date: 9/26/2018 12:01:00 AM --Due Date: 103/2018 11:59:00 PM End Date: 10/3/2018 11:59:00 PM (10%) Problem 4: A batter hits a baseball m = 0.41 kg from rest with a force of F-79 N. The ball is in contact with the bat for0.21 s. It is observed that the ball leaves the bat with an angle of -29 degrees with respect to the horizontal. Assignment Status Click here for detailed view Otheexpertta.com Problem Status Completed | | | 50% Part (a) How long was the ball in the air if it was hit from the top of a cliff with a height of h = 72 m. Grade Summary 2 Completed 3 Completed 0% 100% sinO cotan asin) acos(0 atan acotan sinh0 coshO tanh0 otanh0 tan0 Attempts remaining: 7 (0% per attempt) detailed view Degrees O Radians Submit Hint Hints: 0% deduction per hint. Hints remaining: Feedback: 0% deduction per feedback. 50% Part (b) How far did the ball travel horizontally in meters? All concat © 2018 Expert TA, LLCExplanation / Answer
Change in velocity, u = Ft/m = 79 x 0.21/0.41 = 40.46 m/s
A)
Using kinematic equation
S = ut + 0.5 at^2
72 = - (40.46 sin29) t + 4.9 t^2
4.9 t^2 - 19.62 t - 72 = 0
Time, t = 6.33 sec
B)
Distance, d = t x v cos29 = 224 m
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