Santa\'s reindeer pull his sled (m=1.0x10^3kg) on an icy(essentially frictionles

Question

Santa's reindeer pull his sled (m=1.0x10^3kg) on an icy(essentially frictionless), horizontal road. a) Find the work done by the reindeer to accelerate the sledto 12 m/s b) How much power is being delivered to the sled if they reachthe final speed after 20.4 seconds?
Suppose they are now crossing a snow covered field(coefficient = 0.030, width of field is 75m) at a constant speed of12 m/s c) How much energy will be dissipated by friction? d) Find the power being delivered by the reindeer in order tokeep the sled moving at a constant speed. a) Find the work done by the reindeer to accelerate the sledto 12 m/s b) How much power is being delivered to the sled if they reachthe final speed after 20.4 seconds?
Suppose they are now crossing a snow covered field(coefficient = 0.030, width of field is 75m) at a constant speed of12 m/s c) How much energy will be dissipated by friction? d) Find the power being delivered by the reindeer in order tokeep the sled moving at a constant speed.

Explanation / Answer

A) work is given by W=Fd, but in this case the W is the kineticenergy done by the reindeer, so W=(1/2)mv^2

B)Power is the change in work over a change in time or P=W/t

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