A jet plane lands with a velocity of + 107 m/s and can accelerate at a maximum rate of - 5.18 m/s2 as it comes to rest. From the instant it touches the runway, what is the minimum time needed before it can come to rest?

Question

Bentley Clay

Physics

29 August, 12:15

A jet plane lands with a velocity of + 107 m/s and can accelerate at a maximum rate of - 5.18 m/s2 as it comes to rest. From the instant it touches the runway, what is the minimum time needed before it can come to rest?

+1

Answers (1)

Know the Answer?

Tatiana Martinez · Answer 1

20.7 s

Explanation:

The equation to calculate the velocity for a uniform acceleration a, time t and initial velocity v₀:

v = a*t + v₀

Solve for t:

t = (v - v₀) / a