Physics
posted by Jon on .
A 1000kg space craft at 500m/s is on a collision course with a 400kg satellite travelling at 700m/s. Their paths are converging at a 45 degree angle. After the collision, they remain locked together.
a) calculate their final speed
b) calculate the quantity of nonkinetic energy that is created by the collision
a) using conservation of momentum, i found the final speed to be 518m/s.
b) because it is a completely inelastic collision, kinetic energy is not conserved so..
initial energy=final energy
sum of kinetic energy of the space craft and satellite(initial)= sum of kinetic energy final (mass of the space craft and satellite X 518m/s) + nonkinetic energy
and then solve for nonkinetic energy.. but i didn't get the right answer? can someone help me out please?

from the conservation of momentum, you get the new velocity. Use that velocity to compute energy.
initial KEheat=finalke
solve for heat.