A 2.0 kg ball moving at 10 m's makes an off-center collision with a 3.0 kg ball that is initially at rest. After the collision, the 2.0 kg ball is deflected at an angle of
30° from its original direction of motion and the 3.0 kg ball is moving at 4 m/s
Find the speed of the 2.0 kg ball and the direction of the 3.0 kg ball after the
collision
(11 Marks]​

Suppose that two tanks, 1 and 2, each with a large opening at the top, contain different liquids. a small hole is made in the side of each tank at the same depth 1.57 m below the liquid surface, but the hole in tank 2 has 2.49 times the cross-sectional area of the hole in tank 1. (a) what is the ratio ρ1/ρ2 of the densities of the liquids if the mass flow rate is the same for the two holes? (b) what is the ratio rv1/rv2 of the volume flow rates from the two tanks? (c) at one instant, the liquid in tank 1 is 14.9 cm above the hole. if the tanks are to have equal volume flow rates, what height above the hole must the liquid in tank 2 be just then?