# physics

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.

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3. 👁 1,796

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bobpursley
2. i do not understand that formula bob

i got 0.317 what do you get cause mine is wrong

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3. Vf=45
Vi=0
d=142

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

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bobpursley
4. Thank you for the post

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5. ur

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