If an object of mass 6kg was dropped from a height 35m (initially at rest), how long would it take to reach the ground under free fall?
Free fall == only gravity actingUse one of the SUVAT equations: s = ut + 0.5at2s=35m, u=0 (starts at rest), a=g=9.81ms-2 (gravitational constant), t=?Through rearranging: t=(2s/a)0.5 = 2.67 seconds
