A red ball with a velocity of 3. 0 m/s collides head-on with a yellow ball of equal mass moving with a velocity of −2. 0 m/s. What is the velocity of the two balls after the elastic collision?.

You are about to open a container of soy milk but notice that there are instructions to “shake well before serving.” the soy milk is most likely a

At a certain instant after jumping from the airplane a, a skydiver b is in the position shown and has reached a terminal (constant) speed vb = 52 m/s. the airplane has the same constant speed va = 52 m/s, and after a period of level flight is just beginning to follow the circular path shown of radius ρa = 2330 m. (a) determine the velocity and acceleration of the airplane relative to the skydiver. (b) determine the time rate of change of the speed vr of the airplane and the radius of curvature ρr of its path, both as observed by the nonrotating skydiver.

What is the kinetic energy of a baseball moving at a speed of 40 m/s if the baseball has mass of 0.15 kg?