- #1
jehan4141
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A 3.5x107 kg ship is traveling at 7 m/s. The ship is accelerated forward with a F of 4.5 x 105 N over a distance of 2 km.
What is the final speed? Vf = 10 m/s
How long does it take the ship to traverse the 2 km? T = 233.33 seconds
What is the average power which the engines had to produce to accelerate the ship in part 1? I need help on this please.
You can do P = W/t = (4.5x105 x 2000) / 233.333
P = 3.9 x 106 watts which is the right answer.
However, how come you can't do P = (F)(avg velocity)
P = 4.5x105 * (3/2) = 675000 watts??
What is the final speed? Vf = 10 m/s
How long does it take the ship to traverse the 2 km? T = 233.33 seconds
What is the average power which the engines had to produce to accelerate the ship in part 1? I need help on this please.
You can do P = W/t = (4.5x105 x 2000) / 233.333
P = 3.9 x 106 watts which is the right answer.
However, how come you can't do P = (F)(avg velocity)
P = 4.5x105 * (3/2) = 675000 watts??