Question

A jet plane lands with a speed of 120 m/s and
can decelerate uniformly at a maximum rate
of 5.1 m/s
2
as it comes to rest.
Can this plane land at an airport where
the runway is 0.85 km long? Answer this by
calculating.
Answer in units of km

Answer 1

\[V _{f}^{2} =0 = V _{i}^{2} -2ad\]

Answer 2

insert the values and solve for d... see if it's less than 850 m