Question

A batter hits a baseball with mass 0.140 kg straight upward with an initial speed of 28.0 m/s. How much work has gravity done on the baseball when it reaches a height of 23.0 m above the bat

Answer 1

The work done by the gravity on the baseball is 31.55 Joules.

Step-by-step explanation:

Given that,

Mass of the baseball, m = 0.14 kg

Speed of the baseball, v = 28 m/s

We need to find the work done by the gravity on the baseball when it reaches a height of 23 meters above the bat. We know that the product of force and displacement is called work done. It is given by :

`W=F* d`

Here, F = mg

`W=mgd\\\\W=0.14\ kg* 9.8\ m/s^2* 23\ m\\\\W=31.55\ J`

So, the work done by the gravity on the baseball is 31.55 Joules. Hence, this is the required solution.