Recent content by redbutterfly

Thank you! TE=KE+PE sub g PE sub g=mgh PE sub g=4*9.8*55=2200 J KE=0 TE=0+2200 2200=KE+0 KE=2200=1/2*4*v^2 4400=4*v^2 1100=v^2 v=33 m/s

Homework Statement Using energy conservation and assuming negligible air resistance, calculate the impact speed of a 4.00 kg cannon ball after being dropped from a height of 55.0 m. Homework Equations KE sub total=KE sub 1+KE sub 2 speed=distance/time gravity=9.8 The Attempt at...