A ball is thrown from the top of a building upward at an angle of 39 o to the

B

Baricho Desta

New member
horizontal and with an initial? speed of 21 m/s, as in the figure.
The ball is thrown at a height of 36 m above the ground and hits the ground 71.4167 m from the base of the building.
The acceleration of gravity is 9.8 m/s2.
What is the speed of the ball just before it strikes the ground?
 
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