A player kicks a football at an angle of 370 with the horizontal and with an initial speed of 16 m/s. A second player standing at a distance of 33m from the first in the direction of the kick starts running to meet the ball at the instant it is kicked. Assuming the player is already running at constant speed, how fast must he run in order to catch the ball before it hits the ground

The space between two 15-in.-long concentric cylinders is filled with glycerin (viscosity = 8.5 × 10-3 lb·s/ft2). the inner cylinder has a radius of 1 in. and the gap width between cylinders is 0.1 in. determine (a) the torque and (b) the power required to rotate the inner cylinder at 180 rev/min. the outer cylinder is fixed. assume the velocity distribution in the gap to be linear.