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Author Question: One of the predictions of Kepler's laws of planetary motion is that a) the planets move in ... (Read 67 times)

burchfield96

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on: Jul 28, 2018
One of the predictions of Kepler's laws of planetary
  motion is that
  a) the planets move in circular orbits.
  b) for a non-circular orbit, the closer a planet is to the Sun the faster it travels.
  c) planets nearer the Sun have the longest orbital periods.
  d) all planets move in elliptical orbits around Earth.
  <-- if ppt--><--endif-->

Question 2

A ball falls to the ground from height h and bounces to height h'. Momentum is conserved in the ball-earth system
 a. no matter what height h' it reaches.
  b. only if h' < h.
  c. only if h' = h.
  d. only if h' > h.
  e. only if h'  h.


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momolu

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

b

Answer to Question 2

a


burchfield96

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Reply 2 on: Jul 28, 2018
Excellent

nathang24

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Reply 3 on: Yesterday
:D TYSM

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