Q. A 94 g stone is whirled in a horizontal circle on the end of a 73 cm long string. The stone takes 1.10 s to make each complete revolution. Conclude the angle that the string makes with the horizontal.
Q. A baseball pitcher throws a fastball at a speed of 50m/s. The acceleration occurs as the pitcher holds the ball in his hand and moves it through an almost straight-line distance of 3.6 m. compute the acceleration, assuming that it is constant and uniform.