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Essay Details:
Essay text:
After the collision, the masses m1 and m2 acquire the velocities, respectively, v1f and v2f.
a) (10 p) Show that
b) (10 p) What is v2f ?
c) (5 p) What is approximately the "fractional decrease of the kinetic energy" [(final kinetic energy) / (initial kinetic energy)] of a tennis ball undergoing an elastic scattering with a wall?
Question 2 (10 Points)
A steel ball of mass m = 0.5 kg is fastened to a cord L = 70 cm long and is fixed at the far end; it is released when the cord is horizontal. At the bottom of its path, the ball strikes a mass M = 2.5 kg steel block, initially at rest on a frictionless surface...
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