If the skater started from rest 4 m above the ground (instead of 7m), what would be the kinetic energy at the bottom of the ramp (which is still 1 m above the ground)?

--> mass of skater is 75 kg and the acceleration of gravity is 9.81 N/kg

If the skater started from rest 4 above the ground (instead of 7), what would be the kinetic energy at the bottom of the ramp (which is still 1 above the ground)?

a. 735 J
b. 2940 J
c. 2205 J
d. 4410 J