Gravitational potential energy=mass*gravitational acceleration*height Kinetic energy = 0.5*mass*velocity² So with the given data K.E 0.5*1*x²=12.5 v²=12.5÷(0.5*1) v=√12.5÷(0.5*1) v=5 GPE mass*gravitational acceleration*height 1*9.81*h=98 h=98÷(9.81*1) h= 9.98 m
