A 58-kg boy swings a baseball bat, which causes a 0.140-kg baseball to move toward 3rd base with a velocity of 38.0 m/s.
Calculate the kinetic energy of the baseball (rounding your answer to the integer).
Answer: 101 J Explanation: The kinetic energy of an object is given by
where m is the mass of the object v is its speed For the baseball in this problem, m = 0.140 kg v = 38.0 m/s Substituting into the equation, we find the kinetic energy of the ball:
