- #1

cowmoo32

- 122

- 0

**A baseball of mass .025kg is released at rest from a location 3.5m above the ground. You will calculate its speed at the instant it hits the ground.**

**Choose a sysem to analyze, and list the objects in your system.**

I chose the baseball and the Earth as the system

**Write out the energy principle as it applies to the system you have chosen. Solve for the speed of the baseball when it hits the ground**

Here's where I'm lost. The baseball has kinetic energy (1/2mv^2), and the Earth is pulling down on it (-9.8*m), but I'm not sure how to arrive at the answer. According to the key, the answer is 8.3m/s.