Can you please explain both? Two iceboats (one of mass m, one of mass 2m) hold a
ID: 1344715 • Letter: C
Question
Can you please explain both? Two iceboats (one of mass m, one of mass 2m) hold a race on a frictionless, horizontal, frozen lake. Both iceboats start at rest, and the wind exerts the same constant force on both iceboats. Which iceboat crosses the finish line with more kinetic energy (KE)? Im 2m Start Finish A. B. C. D. E. The iceboat of mass m: it has twice as much KE as the other. The iceboat of mass m: it has 4 times as much KE as the other. The iceboat of mass 2m: it has twice as much KE as the other. The iceboat of mass 2m: it has 4 times as much KE as the other They both cross the finish line with the same kinetic energy Copyright © 2012 Pearson Education Inc.
Explanation / Answer
Work done on both boat = F*S
which is equal
So both boat finish with same K.E
Power=F*V
as velocity increases Force should decrease to keep power constant