Abaseball has a mass of 0.145 kg and is 12 m above the ground. if it has a mechanical energy of 105.8 j, how fast is it moving? 17 m/s 35 m/s 89 m/s 130 m/s

35 m/s

Explanation:

The gravitational potential energy of the ball is given by:

where

m = 0.145 kg is the mass of the ball

g = 9.8 m/s^2 is the gravitational acceleration

h = 12 m is the height above the ground

Substituting, we find

The mechanical energy is equal to the sum of the kinetic energy (K) and the potential energy:

We know that E = 105.8 J, so we can find the kinetic energy:

And from the equation for the kinetic energy:

we can find the speed of the ball:

an energy transformation flow diagram is shown

where is it ?