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Author Question: A ball is thrown vertically upwards at 24.5 m/s. For its complete trip (up and back down to the ... (Read 39 times)

vicotolentino

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on: Jul 28, 2018
A ball is thrown vertically upwards at 24.5 m/s. For its complete trip (up and back down to the starting position), its average speed is
 a. 18.4 m/s.
  b. 12.3 m/s.
  c. 24.5 m/s.
  d. 6.1 m/s.
 e. not given.

Question 2

A parachutist jumps out of an airplane and accelerates with gravity to a maximum velocity of 68.6 m/s in 7.00 seconds. She then pulls the parachute cord and after a 4.00-second constant deceleration, descends at 10.5 m/s for 60.0 seconds, reaching the ground. From what height did the parachutist jump?
 a. 1.03E+3 m
  b. 7.88E+2 m
  c. 1.19E+3 m
  d. 1.66E+3 m
  e. 1.43E+3 m


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miss.ashley

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Reply #1 on: Jul 28, 2018
Answer to Question 1

b

Answer to Question 2

a


vicotolentino

  • Member
  • Posts: 552
Reply 2 on: Jul 28, 2018
Wow, this really help

xiaomengxian

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

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