Posted by Kayla V on .
Batman (mass = 95 kg) jumps straight down from a bridge into a boat (mass = 560 kg) in which a criminal is fleeing. The velocity of the boat is initially +10 m/s. What is the velocity of the boat after Batman lands in it?

Physics 
MathMate,
Assuming the criminal's weight is included in that of the boat (560 kg), calculate the initial kinetic energy using
KE0 = (1/2)Mv0²
Calculate the new kinetic energy
KE1 = (1/2)(M+m)v²
Equate KE0 and KE1 and solve for v. 
Physics 
Mindy,
Or save yourself the trouble and use the following formula.
I just did this problem.
(m1*v01)/(m1+m2) 
Physics 
will,
don't try this ^^ there wrong

Physics 
mindy L.,
mindy's is right