a ball is thrown at an angle of 30 degrees from a building of height 20 m. calculate the time taken to reach point p on the ground which is 100 m away from building.
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Step-by-step explanation:
100=Vcos30t
-20=Vsin30t-5t^2
Solve for V in #1 and plug into#2
-20=100tan30–5t^2
-20–57.7=-5t^2
t^2=77.7/5
t=3.94s
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