A skydiver jumps from an airplane where the resistance he encountered is proportional to its velocity and his limiting velocity is equal to 10 ft/sec. After 20 minutes, he opens his parachute, and at that moment the resistance increases thrice to its original velocity. If he landed after 35 minutes, what is the altitude of the skydiver at the moment he opens his parachute? (Assuming its second limiting velocity is 4 ft/sec) 3500 ft O 3600.75 ft O 11996.89 ft 1200 ft

A skydiver jumps from an airplane where the resistance he encountered is proportional to its velocity and his limiting velocity is equal to 10 ft/sec. After 20 minutes, he opens his parachute, and at that moment the resistance increases thrice to its original velocity. If he landed after 35 minutes, what is the altitude of the skydiver at the moment he opens his parachute? (Assuming its second limiting velocity is 4 ft/sec) 3500 ft O 3600.75 ft O 11996.89 ft 1200 ft