Question

 Aboatstrikes anunder water rock and opens a pencil-sized crack 7.0mmwide 

and 150 mm long in its hull 65 cm below the waterline. The crew takes 5.00 min to locate the crack and plug it up. How much water has entered the boat in the meantime?

Answer 1

$$V=Avt\\V=(0.007)(0.15)(5\cdot60)\sqrt{2(9.8)(0.65)}=1.1\ m^3\\$$