]
(i) A butterfly of mass 1.0 g that flies upward at a rate
of 0.5 ms-1.
(ii) A 250 g squirrel climbing upon a tree at a rate of
0.5 ms-1 .
Answer:
(i) Given, mass of butterfly 
and speed 
Power
= Force x Speed 
P = mgv
(ii) Given, mass of squirrel
and 
Power =
Force x speed [Force, F = mg]
Therefore, squirrel has more power than butterfly.
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