I Þ I K U N I V E R S I T Y
Departments of Electronics & Computer Science Engineering
Course: Engineering Physics I
Professors T. Yarman & E. Iþýksal
Final Exam: January 25, 2000
Question 1 (25 Points)
Consider a one-dimensional elastic scattering process, where a projectile of velocity v1i and mass m1, collides with a target of velocity v2i and mass m2. 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......
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