Lots of algebra here.
Write the momentum equations in x and y directions, momentum has to be conserved in each direction.
Once you find the velocity of the two girls, you can find the KE of each. Energy is probably not conserved.
Betty Bodycheck (mB = 60.0 kg, vB = 22.0 km/h in the positive x-direction) and Sally Slasher (mS = 46.3 kg, vS = 28.0 km/h in the positive y-direction) are both racing to get to a hockey puck. Immediately after the collision, Betty is heading in a direction that is 76.0° counterclockwise from her original direction, and Sally is heading back and to her right in a direction that is 12.0° from the x-axis.
What is their Kinetic Energy each?
5 answers
I found the velocity of the two girls. I found that Betty's velocity is 5.14 m/s and Sally's is 6.35 m/s. I'm just having with converting these into Kinetic Energy.
I'm just having trouble with coverting these into Kinetic Energy.
KE of each= 1/2 massgirl*v^2
Ok Thanks a lot for your help
3 answers