Rank in order the SPEEDS at points A, B, and C, from the fastest to the slowest.

Question

Rank in order the SPEEDS at points A, B, and C, from the fastest to the slowest. An airplane taking off at the airport accelerates from rest at one end of a runway and must attain takeoff speed before reaching the other end of the runway. (A) The plane has constant acceleration, a, and the runway has a length L. What is the minimum takeoff speed, vT, required for this plane to fly? (Give a symbolic answer.) (B) If the acceleration has a magnitude of 1/4 g and the runway length is L = 2 km, calculate vT. (Assume g = 1.0 m/s^2.)

Explanation / Answer

solving first question

We know slope of x-t graph gives velocity

so more is slope value,more is velocity

so slope at A>B>C

so velocity

A>B>C

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