- #1
sweedeljoseph
Homework Statement
A 35 kg ice skater traveling at 12 m/s runs head-on into a 65 kg skater traveling straight forward at 4 m/s. At what speed do the ice skaters travel if they move (stuck) together after the collision?
Homework Equations
i put it below. i don't know if youre supposed to use something else. or if there's something eaiser.
The Attempt at a Solution
answer from the teacher is 1.6 m/s.
i tried this:
m1*v1+m2*v2=m1'*v1'+m2'*v2'
m1*v1+m2*v2=v'(m1'+m2')
v=(m1*v1+m2*v2)/(m1'+m2')
v=((35*12)+(65*4))/100
v=6.8
thats what i got. is it all wrong? i know the equation stuff isn't because that's from my teacher. but when i do the math its not the same. its supposed to be 1.6 m/s. am i missing a step?
thank you!
sweedeljoseph
Last edited by a moderator: