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A person throws a ball at an initial angle θ0 = 45° from the horizontal with...

A person throws a ball at an initial angle θ0 = 45° from the horizontal with an initial speed of v0

= 20 m⋅s-1. The point of release of the ball is at a height d = 2 m above the ground. You may neglect air resistance.
a) How long does it take the ball to reach the highest point of its trajectory?
b) What was the maximum vertical displacement of the ball?

c) What was the distance of the throw?
d) Repeat steps a, b, and c for θ0 = 20°, 30°, 60° and 70°

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