a sled weighs 2 newtons. it is set in motion over a frictionless surface by a bettery-powered fan with a weight of 1 newton. After the battery has discharged, the sled is coasting at a speed of 12 m/s. What was the maginitude of the horizontal force exerted on the sled while the fan was turning?

Question

roadjester · Answer

This question is from the early chapters of your book correct?

anonymous · Answer

it's a custom question by my teacher

roadjester · Answer

ok, what chapter are you on? what topic?

anonymous · Answer

force

roadjester · Answer

What is newton's 3rd law say?

roadjester · Answer

what does*

anonymous · Answer

For every action there is an equal and opposite reaction.

roadjester · Answer

Wait, the force of the sled is 2N downward, and the fan is 1N downward also, you're not given enough information since a fan displaces the air and it's the fan spinning that pushes the sled....

anonymous · Answer

correct. i was thinking the same too because the we have no velocity for the fan

anonymous · Answer

i have another question..dont go yet

roadjester · Answer

And you can't exactly apply conservation of linear momentum here either.

roadjester · Answer

If it's a separate question please post it as a new one.