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Author Question: A projectile is launched straight upward at 50 m/s. Neglecting air resistance its speed upon ... (Read 140 times)

tfester

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on: Jul 29, 2018
A projectile is launched straight upward at 50 m/s. Neglecting air resistance its speed upon returning to its starting point is
 
  A) less than 50 m/s.
  B) 50 m/s.
  C) more than 50 m/s.

Question 2

A child throws a ball with an initial speed of 8.0 m/s at an angle of 40 above the horizontal. The ball leaves her hand 1.0 m above the ground.
 
  Neglect air (a) How far from where the child is standing does the ball hit the ground? (b) How long is the ball in flight before it hits the ground? (c) What is the magnitude of the ball's velocity just before it hits the ground?


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sylvia

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Reply #1 on: Jul 29, 2018
Answer to Question 1

Answer: B

Answer to Question 2

(a) 7.5 m (b) 1.2 s (c) 9.1 m/s


tfester

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Reply 2 on: Jul 29, 2018
Gracias!

kjohnson

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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