A light ping-pong ball and a heavy rubber ball of exactly the same size are each launched at the same angle and initial velocity, but the rubber ball goes much farther than the ping-pong ball. Draw a Free Body diagram for each object and use the concept of Drag Force and Terminal Velocity to prove that the problem statement is correct.

The x-coordinate of a particle in curvilinear motion is given by x = 3.1t3 - 4.9t where x is in feet and t is in seconds. the y-component of acceleration in feet per second squared is given by ay = 2.3t. if the particle has y-components y = 0 and vy = 5.0 ft/sec when t = 0, find the magnitudes of the velocity v and acceleration a when t = 1.8 sec. sketch the path for the first 1.8 seconds of motion, and show the velocity and acceleration vectors for t = 1.8 sec. answers: v = ft/sec a = ft/sec2

Use the right-hand rule for magnetic force to determine the charge on the moving particle. this is a charge.

Which word expression describes how much to calculate pressure