Physics Submarine Question?

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Physics Submarine Question?

A submarine of mass 2.1 *10^6 kg and initially at rest fires a torpedo of mass 260 kg. The torpedo has an initial speed of 100.9 m/s. What is the initial recoil speed of the submarine? Neglect the drag force of the water.

2007-02-25 12:48:40 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Physics

2 answers

I think: (2.1 * 10^6) x = 260 * 100.9 and x = .01249238 m/s

2007-02-25 13:32:21 · answer #1 · answered by Richard S 6 · 0⤊ 0⤋

use conservation of momentum(mv) the sum of momentum, the torpedo plus the recoil, must equal zero

2007-02-25 13:35:39 · answer #2 · answered by meg 7 · 0⤊ 0⤋