If the KE of an arrow is tripled, by what factor has its speed increased?

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If the KE of an arrow is tripled, by what factor has its speed increased?

2007-11-05 09:12:33 · 2 answers · asked by erin k 1 in Science & Mathematics ➔ Physics

2 answers

sqrt(3). Ke = 1/2mv^2 therefore if KE -> 3 KE, v must goes like sqrt(3 KE) or v increase by sqrt(3)

2007-11-05 09:18:45 · answer #1 · answered by nyphdinmd 7 · 2⤊ 0⤋

velocity gets multiplies by the square root of 3. then when you use the formula ke=(1/2)(m)(v)^2. you put a root 3 inside next to the v and it gets squared it ends up being a 3.

2007-11-05 09:19:20 · answer #2 · answered by Anonymous · 0⤊ 0⤋