Answer:
-0.912 m/s
Explanation:
When the package is thrown out, momentum is conserved. The total momentum after is the same as the total momentum before, which is 0, since the boat was initially at rest.

where
are the mass of the child, the boat and the package, respectively.
are the velocity of the package and the boat after throwing.



Answer: Yes the fuse will be able ti withstand ,when the air conditioner is switched on.
Explanation:
Power of air conditioner = 2 kW = 2000 W (1000 W=1kW)
Potential difference applied = V = 220 V
Fuse rating of the air conditioner = 10 A
Current used by the air conditioner = ?


10 A > 9.1 A ,Yes the fuse will be able ti withstand ,when the air conditioner is switched on.