Question

a plane landing on a small tropical island has just 70 m of runway on which to stop. if its initial speed is 60 m/s, (a) what is the minimum acceleration of the plane during landing, assuming it to be constant? (b) how long does it take for the plane to stop with this acceleration?

Answer 1

Below

Step-by-step explanation:

The plane's average speed will be (60 - 0) /2 = 30 m/s

to cover 70 m , the time required will be 70 m / 30 m/s =2.333 s

acceleration = change in velocity / change in time = 60 m/s / 2.333s =

25.7 m/s^2