You (50 kg mass) skate on ice at 4.0 m/s to greet your friend (40 kg mass), who is standing still, with open?

Question

arms. As collide, while holding each other, with what speed do you both move off together?

a.) 2.2 m/s
b.) 5.0 m/s
c.) 23 m/s
d.) zero

Answer 1

This a conservation of momentum problem
m1v1=m2v2

50*4=90*v2

v2=2.2m/s

Answer 2

Are we doing your homework for you?

As you collide, you knock your friend senseless, and after they recover from the concussion, they sue you.

Answer 3

Depends on how rough/smooth the ice is.