An airplane, starting from rest, moves down the runway at constant acceleration for 18 s and then takes off at a speed of 60 m/s. What is the average acceleration of the plane?

Explanation:

Given

Airplane runs for a time period of

Airplane takes off with a velocity of

It is given that airplane starts from rest i.e. initial velocity

acceleration is the rate of change of velocity thus it is given by

Average acceleration for 18 s is