[填空题]
An airplane pilot fell 370 sj + nyqa)0kw37ka-p xm aftesbwnxa8)py 07:rm72 epind(wzu(,o er jumping from an aircraft without his parachute opening. He landed in a snowbank, creating a crater 1.1 m d ze0(p7wnwo(,aur:dbxe2iy 7)m sn8 peep, but survived with only minor injuries. Assuming the pilot’s mass was 78 kg and his terminal velocity was 35m/s estimate
(a) the work done by the snow in bringing him to rest; J
(b) the average force exerted on him by the snow to stop him; N
(c) the work done on him by air resistance as he fell. J