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

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

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 :

Here, F = mg

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

force is mass*acceleration.

we have a very small mass: 11.4*0.001 kg

if we want 0.035n of force, we need an acceleration:

0.035 = 11.4*0.001*a

a = 0.035/(11.4*0.001) m/s^2