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anonymous

  • one year ago

What is the average acceleration of a jet ski that goes from rest to 10 m/s west in 4 s? Take the direction west to be positive, and east to be negative. A. 2.5 m/s2 B. -2.5 m/s2 C. 0.4 m/s2 D. -0.4 m/s2

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  1. taramgrant0543664
    • one year ago
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    Acceleration is just the change in velocity divided by the change in time so you just have to take the 10m/s divided by 4s Since west is positive and the jet ski is going west your answer will be positive.

  2. anonymous
    • one year ago
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    A?

  3. taramgrant0543664
    • one year ago
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    Yes it would be A

  4. anonymous
    • one year ago
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    sweet if you help me with one more i'll give you a metal

  5. anonymous
    • one year ago
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    Which of the following has no acceleration? A. a satellite orbiting at a constant speed B. a person running once around a track at a constant speed C. a car making a turn at a constant speed D. a person running 100 m straight across a field at a constant speed

  6. anonymous
    • one year ago
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    brb

  7. anonymous
    • one year ago
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    @taramgrant0543664 ?

  8. taramgrant0543664
    • one year ago
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    It would be D because acceleration exists for the rest because there was a change in direction but not in this case it was a straight run

  9. Astrophysics
    • one year ago
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    Think of acceleration as \[\frac{ \Delta v }{ \Delta t }\] so the change in velocity over time

  10. Astrophysics
    • one year ago
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    Yes, D is right, as your speed is at constant a = 0

  11. Astrophysics
    • one year ago
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    As tara mentioned, there is no change in direction and if you think of velocity, which is \[\frac{ \Delta d }{ \Delta t }\]

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