An airplane starts from rest and accelerates at a constant 10.8 m/s².What is its speed at the end of a 400 m-long runway? A)37.0 m/s B)93.0 m/s C)65.7 m/s D)4320 m/s E)186 m/s

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Quizplus · Accepted Answer

Using the kinematic equation $ v^2 = u^2 + 2as $, where initial velocity $ u = 0 $, acceleration $ a = 10.8 \, \text{m/s}^2 $, and distance $ s = 400 \, \text{m} $, we find $ v = \sqrt{0 + 2 \times 10.8 \times 400} = 93.0 \, \text{m/s} $.

An Airplane Starts from Rest and Accelerates at a Constant