Prove that li, h0(i-r, y, 2) and from thatし2 . h-0 where thehamilton operator h is rotationally invariant, i. e.ˆh=ˆp/22m+v(ˆx2+ ˆy2+ ˆz2).

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The experiment done in lab is repeated, using a ball that has unknown mass m. you plot your data in the form of f 2 versus m/l, with f in rev/s, m in kg, and l in m. your data falls close to a straight line that has slope 3.19 m/(kg · s2). use g = 9.80 m/s2 and calculate the mass m of the ball.

During a car accident, a 125kg driver is moving at 31m/s and in 1.5s is brought to rest by an inflating air bag. what is the magnitude of the change in momentum to the driver