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An experimental space cruiser was initially drifting in the −x direction with velocity of 10 m/s....

An experimental space cruiser was initially drifting in the −x direction with velocity of 10 m/s. The ion thrusters on the cruiser then fires and provides +5x10^4N of force on the cruiser for 15 seconds. If the spaceship has a mass of 11,000 kg, what will its final velocity along the +x direction be?

a. -5.8m/s

b. +5.8m/s

c. +86m/s

d. +7.8m/s

e. -64m/s

f. -6.8m/s

The answer I got was 58.18 m/s, have I done something wrong?

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