Solve the given parts of following problem:
Problem: A jetliner, traveling northward as it lands, must reduce its speed to 6.1m/s within 750m of available runway. A safe upper limit for the magnitude of the jet's deceleration is 3.1m/s2, once the brakes are applied.
Part A: Find the maximum initial velocity that the jet can have as it touches down to ensure a safe landing. Be sure to clearly show your work, including any equations that you are using.
Part B: If a second plane wants to touch down immediately after this jet, what is the minimum time it must wait for the jet to turn off at the end of the runway?
I want help to find the minimum time it must wait for the jet to turn off at the end of the runway.