9. batman (mass=91 kg) jumps straight down from a bridge into a boat (mass=510 kg) in which a criminal is fleeing. the velocity of the boat is initially 11 m/s. what is the velocity of the boat after batman lands in it?

V = 9.33 m/s

Explanation:

Given that,

Mass of the batsman,

Mass of the boat,                            

Initial speed of the boat, v = 11 m/s

Let V is the velocity of the boat after Batman lands in it. The net momentum of the system remains constant. Using the conservation of linear momentum to find it as :

V = 9.33 m/s

So, the velocity of the boat after Batman lands in it 9.33 m/s. Hence, this is the required solution.                                                          

the answer is 100. i just did this lesson and got a 100% on it. : )

-fishtank