Question

An aeroplane touches ground at a speed of 180km/h and stops after covering a runway of 1 km calculate retardation and the time in which the plane come to rest​

Answer 1

v2 = u2 + 2as

0 = (50)^2 + 2a(1000)

a = -(2500)/2000 = -1.25 m/s^-2

hope it helps