A golf club of mass 0.215 kg has a clubhead speed of 55 m/s (~120mph) strikes a golf ball of mass 0.046 kg at rest on a tee. After the collision, the clubhead has a speed of 42 m/s (same direction of swing). Use the conservation of momentum law to find the speed of the ball just after impact.

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?

The graph describes the motion of an object. the object moves with from a to b. it from b to c. it moves with from c to d.

When a light bulb shines, it gives off light energy and energy. a. heat b. potential c. chemical d. electrical