1.

A parachutist of weight w strikes the ground and comes to rest with an upward acceleration of magnitude 3 g. Force exerted on him by the ground during landing is

A.  \[2w\]                                 
B.  3 \[w\]
C.  4 \[w\]                   
D.         5 \[w\]
Answer» D.         5 \[w\]


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