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Author Question: Assume that the average mass of each of the approximately 1 billion people in China is 55 kg. Assume ... (Read 176 times)

Collmarie

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on: Jul 28, 2018
Assume that the average mass of each of the approximately 1 billion people in China is 55 kg. Assume that they all gather in one place and climb to the top of 2 m high ladders. The center of mass of the Earth (mE = 5.90 1024 kg) is then displaced
 a. 0 m.
  b. 1.84  10-23 m.
  c. 1.84  10-14 m.
  d. 1.80  10-13 m.
  e. 2 m.

Question 2

At the instant a 2.0-kg particle has a velocity of 4.0 m/s in the positive x direction, a 3.0-kg particle has a velocity of 5.0 m/s in the positive y direction. What is the speed of the center of mass of the two-particle system?
 a. 3.8 m/s
  b. 3.4 m/s
  c. 5.0 m/s
  d. 4.4 m/s
  e. 4.6 m/s


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ntsoane kedibone

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

C

Answer to Question 2

B


Collmarie

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Reply 2 on: Jul 28, 2018
Thanks for the timely response, appreciate it

bblaney

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Reply 3 on: Yesterday
Gracias!

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