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## Homework Statement

An airport has runways only 174 m long. A

small plane must reach a ground speed of

42 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/s

2

.

## Homework Equations

Average acceleration= change in velocity/change in time

## The Attempt at a Solution

174/74=4.13m/s^2