What is the average acceleration of a plane going 140mi/h in 2.10s ?

Question

What is the average acceleration of a plane going 140mi/h in 2.10s ?

Answer 1

Let us assume that the velocity of the plane changed from 0 to 140 mph in 2.10 secs.

But first we need to convert that into feet per second.

140 mph = 140 x 1760 x 3 / 3600 feet per second

= 205.333 feet/sec.

v = u + at is the formula to be used.

205.333 = 0 + a x 2.1

a = 205.333 / 2.1

= 97.777...

= 97.78 feet / sec^2