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Two rockets with the same mass are. Accelerated. Rocket A accelerates twice as fast as Rocket B. Which statement is correct?

The motor in rocket A is four times as powerful as the motor and in rocket B
The motor in rocket A Is twice as powerful as the motor in rocket B
The motor in rocket A is half as powerful as the motor in rocket B
The motor in rocket A is half as Powerful as the motor in rocket B

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ashley
3 answers

  1. 2 rockets
    Rocket A:
    m = 1 kg
    a = 1 m/s^2
    in 1 second
    F = m a = 1 N
    distance = 1/2 a t^2 = 1/2 meter
    work done = force * distance = 1 * 1/2 = 1/2 Joule
    power = work /second = 1/2 Watt
    now
    Rocket B
    m = 1 kg
    a = 2 m/s^2
    in 1 second
    F = m a = 2 N
    distance = 1/2 a t^2 = 1/2 * 2 = 1 meter
    work done = force * distance = 2 * 1 = 2 Joules
    power = work /second = 2 Watts
    looks like 4 times the power. Twice the force over twice the distance in a second.

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    Damon

  2. What is the Answer?

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    Dylan

  3. The motor in rocket A is twice as powerful as the motor in rocket B

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    Soji

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