Author Question: Daisy (50. kg mass) skates on ice at 4.0 m/s to greet her friend (70. kg mass), who is standing ... (Read 58 times)

jeatrice · **on:** Jul 27, 2018

Daisy (50. kg mass) skates on ice at 4.0 m/s to greet her friend (70. kg mass), who is standing still, with open arms. As they collide, while holding each other, with what speed do they both move off together?

A) 2.5 m/s
B) 1.7 m/s
C) zero
D) 5.0 m/s

Question 2

Heat is added to an ideal gas at 20.C. If the internal energy of the gas increases by a factor of three during this process, what is the final temperature?

What will be an ideal response?