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Author Question: A ball is thrown vertically upwards at 29.4 m/s. For its complete trip (up and back down to the ... (Read 97 times)

sabina

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on: Jul 28, 2018
A ball is thrown vertically upwards at 29.4 m/s. For its complete trip (up and back down to the starting position), its average speed is:
 a. 14.7 m/s.
  c. 4.90 m/s.
  b. 9.80 m/s.
  d. not given.

Question 2

A parachutist jumps out of an airplane and accelerates with gravity to a maximum velocity of 58.8 m/s in 6.00 seconds. She then pulls the parachute cord and after a 4.00-second constant deceleration, descends at 10.0 m/s for 80.0 seconds, reaching the ground. From what height did the parachutist jump?
 a. 914 m
  c. 1520 m
  b. 1110 m
  d. 1750 m


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chevyboi1976

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

A

Answer to Question 2

B


sabina

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Reply 2 on: Jul 28, 2018
Great answer, keep it coming :)

Joy Chen

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Reply 3 on: Yesterday
Wow, this really help

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