# Physics

A pilot stops a plane in 484 m using an acceleration of -8 m/s2. How fast was the plane moving before the breaking began? Thanks.

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3. 17
1. V = sqrt(2 a X)
where a is the deceleration rate and X is the distance

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posted by drwls
2. 89 km/h at 54 north of east

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posted by haneen

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