Physics, 10.12.2021 18:00 wwwvio7251
Two ice boats (one of mass m, one of mass 2m) hold a race on a frictionless, horizontal, frozen lake. Bath iceboats start at rest, and the wind exerts the same constant force on both iceboats.
A. The iceboat of mass m: it has twice as much KE as the other.
B. The iceboat of mass m: it has 4 times as much KE as the other.
C. The iceboat of mass 2m: it has twice as much KE as the other.
D. The iceboat of mass 2m: it has 4 times as much KE as the other.
E. They both cross the finish line with the same kinetic energy.
WHY E??1/2mv^2 = 1/2mv^21/2 (2m) v^2 = mv^2 ? so the with 2m has more KE ?? why not?
Answers: 1
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Two ice boats (one of mass m, one of mass 2m) hold a race on a frictionless, horizontal, frozen lake...
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