Question

An outfielder throws a 0.155 kg baseball at a speed of 75.0 m/s at an initial angle of 35.0 with respect to the horizontal. a. What is the kinetic energy of the baseball at the highest point of its motion? b. What is the potential energy of the baseball at the highest point of its motion?

Answer 1

The kinetic energy of the baseball at the highest point of its motion is approximately 0.8728 Joules. The potential energy of the baseball at the highest point of its motion is zero.

Step-by-step explanation:

a. The kinetic energy of the baseball at the highest point of its motion can be calculated using the equation:

Kinetic Energy = (1/2) × mass × velocity²

Given that the mass of the baseball is 0.155 kg and the velocity is 75.0 m/s, we can substitute these values into the equation:

Kinetic Energy = (1/2) × 0.155 kg × (75.0 m/s)² = 0.8728125 J

Therefore, the kinetic energy of the baseball at the highest point of its motion is approximately 0.8728 Joules.

b. The potential energy of the baseball at the highest point of its motion is zero. This is because potential energy is defined as the energy an object possesses due to its position or state. At the highest point of its motion, the baseball has reached its maximum height and has no potential energy.