Author Question: Two identical freight cars roll without friction (one at 1 m/s, the other at 2 m/s) toward each ... (Read 81 times)

ashley · **on:** Jul 29, 2018

Two identical freight cars roll without friction (one at 1 m/s, the other at 2 m/s) toward each other on a level track. They collide, couple together, and roll away in the direction of

A) the slower car.
B) the faster car.
C) neither, for they stop.

Question 2

If all people, animals, trains and trucks all over the world began to walk or run towards the east (opposite the direction of Earth's spin), then

A) Earth would spin a bit faster.
B) Earth would spin a bit slower.
C) Earth's spin would not be affected at all.