A roller coaster cart of mass m = 291 kg starts stationary at point A, where h1 = 37 m and a while later is at B, where h2 = 11. The acceleration of...

A roller coaster cart of mass m = 291 kg starts stationary at point A, where h1 = 37 m and a while later is at B, where h2 = 11.4 m. The acceleration of gravity is 9.8 m/s2 . What is the speed of the cart at B, ignoring the effect of friction? Answer in units of m/s