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## Homework Statement

A child in a boat throws a 6.40kg package out horizontally with a speed of 10.0 m/s. Calculate the veolcity of the boat immediately after, assuming it was initially at rest. The mass of the child is 26.0kg and that of the boat is 45.0kg. Ignore water resistance.

## Homework Equations

(m1+m2+m3)v(boat final) = m1v1(initial) + m2v2(initial) + m3v3(initial)

## The Attempt at a Solution

(6.40+26+45)v(boat final) = 6.4(10)+26(0)+45(0)

(77.4)v(boat final)=64

Dont seem right to me. Thanks in advance!

v(boat final)= 0.83 m/s

i know that we're suppose to treat it like an explosion problem. but im stuck there cuz the answer dont seem to make sense to me.

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