The height of the Empire State Building is 318.00 meters. If a stone is dropped from the top of the building, what is the stone's velocity just before it strikes the ground? –1.75 meters/second –18 meters/second –79 meters/second –636 meters/second
Substitute and solve. ================ vf^2 = 0^2 + 2 * 9.81 * 318 vf^2 = 6239.16 v = sqrt(6239.16) v = 78.990 m/s I guess down is minus in your classroom. Anyway pick -79 <<<<<=======
