Author Question: A baseball outfielder throws a baseball of mass 0.15 kg at a speed of 40 m/s and initial angle of ... (Read 116 times)

jwb375 · **on:** Jul 28, 2018

A baseball outfielder throws a baseball of mass 0.15 kg at a speed of 40 m/s and initial angle of 30. What is the kinetic energy of the baseball at the highest point of the trajectory?

Question 2

As a 1.0-kg object moves from point A to point B, it is acted upon by a single conservative force which does -40 J of work during this motion. At point A the speed of the particle is 6.0 m/s and the potential energy associated with the force is +50 J. What is the potential energy at point B?
a. +72 J
b. +10 J
c. +90 J
d. +28 J
e. +68 J