A baseball outfielder throws a baseball of mass 0.20 kg at a speed of 50 m/s and initial angle of 30°.What is the kinetic energy of the baseball at the highest point of the trajectory? Ignore air friction.

Question

Quizplus · Accepted Answer

At the highest point of the trajectory, the vertical component of velocity is zero, and only the horizontal component contributes to kinetic energy. The horizontal velocity is 50 * cos(30°) = 43.3 m/s. Kinetic energy = 0.5 * 0.20 * (43.3)^2 = 188 J.

A Baseball Outfielder Throws a Baseball of Mass 0