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physics

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An airport has runways only 142 m long. Asmall plane must reach a ground speed of 45 m/s before it can become airborne. What average acceleration must the plane’s engines provide if it is to take off safely from its airport?Answer in units of m/s2.

  • physics -

    Vf^2=Vi^2+2ad solve for a

  • physics -

    i do not understand that formula bob

    i got 0.317 what do you get cause mine is wrong

  • physics -

    Vf=45
    Vi=0
    d=142

    45^2=2*a*142
    solve for a.
    Yep, yours is way wrong.

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