Question

on
A plane travels in a single direction
a runway. It reaches the end
of the runway in 20 seconds
and its velocity is 80 m/s. What is
lits acceleration ?
What is the Wif?
What is the vi ?​

Answer 1

Answer:

an airplane is sitting at the end of a runway. The

plane takes off and moves down the runway. It takes 20 s for

the plane to travel from one end of the runway to the other.

When the airplane reaches the end of the runway, it is traveling 80 m/s. The airplane is traveling in a straight line. The initial velocity of the plane is 0 m/s and the final velocity of the

plane is 80 m/s. The time is 20 seconds. The acceleration for

the plane can be calculated as follows:

a  =(vf -  vi ) =  (80 m/s -   0 m/s) = 4 m/s2                                                                              

         t                   20 s

The airplane is speeding up as it goes down the runway.

The final speed is greater than the initial speed. The acceleration is positive.