A ball is thrown straight upward and returns to the thrower's hand after 2.00 s in the air. A second ball thrown at an angle of 40.0° with the horizontal reaches the same maximum height as the first ball.

Question

A ball is thrown straight upward and returns to the thrower's hand after 2.00 s in the air. A second ball thrown at an angle of 40.0° with the horizontal reaches the same maximum height as the first ball. 
(a) At what speed was the first ball thrown? 
m/s

(b) At what speed was the second ball thrown? 
m/s

(c) How long does it take the ball to reach a point 10.0 m below the level of launching? 
  s

Henry · Answer

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