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A submarine with a mass of 6.60 ✕ 106 kg contains a torpedo with a mass...

A submarine with a mass of 6.60 ✕ 106 kg contains a torpedo with a mass of 340 kg. The submarine fires the torpedo at an angle of θ = 20° with respect to the horizontal as shown in the figure below.

(a) If the submarine and the torpedo were initially at rest and the torpedo left the submarine with a speed of 89.4 m/s, what is the recoil speed of the submarine?
m/s

(b) What is the direction of recoil of the submarine?
° counterclockwise from the +x axis

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