Describe what stress is and how it affects your body. Address physiological fight-or-flight responses and how those responses relate to your cardiorespiratory and muscular systems. I need 3 paragraphs plz.

The roller coaster from problem #1 then tops a second hill at 15.0 m/s, how high is the second hill? 91.5 m 79.2 m 80.0 m 68.5 m

Karen is running forward at a speed of 9 m/s. she tosses her sweaty headband backward at a speed of 20 m/s. the speed of the headband, to the nearest whole number relative to a stationary observer watching karen

Boiling water is an example of physical change. true or false