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An airplane lands on the runway at a velocity of 22.7m/s. The plane accelerates at a rate of -3.3m/s2 until it comes to rest. How much time
Question
An airplane lands on the runway at a velocity of 22.7m/s. The plane accelerates at a rate of -3.3m/s2 until it comes to rest. How much time does it take the plane to stop? (round to the nearest tenth).
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Physics
3 years
2021-07-27T12:47:19+00:00
2021-07-27T12:47:19+00:00 1 Answers
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Answer:
time = 6.9 s
Explanation:
velocity of the plane v = 22.7 m/s
acceleration of the train a = -3.3 m/s^2
it finally comes to res, final velocity u = 0 m/s
time t = ?
using the equation
v = u + at
substituting, we have
0 = 22.7 + (-3.3)t
0 = 22.7 – 3.3t
3.3t = 22.7
t = 22.7/3.3 = 6.9 s