01 and a dspiaced Cellege Physlcs I (1401 Cutnell, Physics, 100 Grace Period:8da

Question

01 and a dspiaced Cellege Physlcs I (1401 Cutnell, Physics, 100 Grace Period:8days left / Register Now ORION Dwnluadable eTextbesk Chapter 03, Problem 73 gove h. cosut let extrt Sohtonin Astanang on ata way, hts a not to a ren that is erated 7.00 vekty of 34.0 m/s at an angle of 32.8 above the ground, find the time that the ball is in the air betore it hits the green standing if the ball leaves her dub with 27 the tale ance 2% Cick if you weuld like to Show Work for this questien Open Show w n-um. guestion Attempts: 0of3used MacBook Air 8 0

Explanation / Answer

given elevationof green wrt intial launch point, h = 7 m
initial velocity imparted to golf ball, v = 34 m/s
direction, theta = 32.8 deg above ground

so vertical velocity = vsin(theta)
vertical displacement when the ball touched the ground = h
vertical acceleration = -g
time of flight = t
hence
h = vsin(theta)*t - 0.5gt^2
4.9t^2 - 18.418t + 7 = 0
solving for t
t = 3.329 s

hence the ball is in air for 3.329 s

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