A50-kg skateboarder design a creative way to gain enough speed to coast up a ramp. By compressing a stiff spring. H e finds that he can go 1.5 m up the ramp? A) How much kinetic energy does the spring give him? B) The energy in the spring can be calculated using the expression 1/2kx^2 where k= 1470N/m and is called the spring constant and x is the distance the spring is compressed. How much was the spring compressed in this case? My Proof A) Eg= mgh Eg=50kg*9.8N/kg*1.5m Eg=735J So Eg=Ek Ek=735J B) 735J=1/2*1470N/m*x^2 x^2=1470J/1470N/m x=1m Is That right or Wrong?