Then diagram given below shows a ski jump.A skier weighing 60 kgf stands at A at top of ski jump.He moves from A and takes off for his jump at B. (a)Calculate the change in the gravitational potential energy of the skier between A and B. (b)If 75 % of the energy in part (a)becomes kinetic energy at B,calculate the speed at which the skier arrives at B. (Take g=10 m s^(-2))

Then diagram given below shows a ski jump.A skier weighing 60 kgf stan

1.	Then diagram given below shows a ski jump.A skier weighing 60 kgf stands at A at top of ski jump.He moves from A and takes off for his jump at B. (a)Calculate the change in the gravitational potential energy of the skier between A and B. (b)If 75 % of the energy in part (a)becomes kinetic energy at B,calculate the speed at which the skier arrives at B. (Take g=10 m s^(-2))
Answer» Solution :(a)`3.6xx10^(4)`J (B) 30 m `s^(-1)`