Author Question: Assume that the average mass of each of the approximately 1 billion people in China is 55 kg. Assume ... (Read 290 times)

Collmarie · **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