Abowling ball of mass 8 kg hits a wall going 5 m/s and rebounds at a speed of 4 m/s. what was the impulse applied to the bowling ball?
a. 40 kg'm/s
b. 32 kg'm/s
c. 72 kg'm/s
d. 8 kg'm/s

Let f(x) = x4- 8x2 . find the relativeextrema of this function using the second derivative test.

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?

Could someone me find the answer to this problem.