A plane needs a speed of 80 m/s to take off. It starts from rest and speeds up at 4 m/s². How long must the runway be, at least?

PhysicsMediumHigh School (9–10)GeneralMechanics › Motion in a Straight Line

A plane needs a speed of $80\ \text{m/s}$ to take off. It starts from rest and speeds up at $4\ \text{m/s}^2$ . How long must the runway be, at least?

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