Average velocity can be calculated by dividing displacement over what? nvm its change in time

The average speed of an object is defined as the distance traveled divided by the time elapsed. Velocity is a vector quantity, and average velocity can be defined as the displacement divided by the time. Hope this answers the question. Have a nice day.

Explanation:

It is given that,

Kinetic energy of the baseball, E = 140 J

Speed with which the baseball is thrown, v = 96 mph = 42.91 m/s

(a) The kinetic energy of the ball is given by the formula as :

m = 0.15 kg

(b) The ball reaches a height, h = 270 ft = 82.29 m

The assumed height of the ball, h' = 3 ft = 0.914 m

The increase in potential energy of the ball is :

So, the increase in potential energy of the ball is 119.62 Joules. Hence, this is the required solution.