Question

A plane goes from a standstill to 350 mi/hr in about 45 sec. What is the plane's acceleration?

Answer 1

The acceleration is 466.7m/s^2

Explanation:

Given

`u = 0m/s` -- Initial Velocity

It is 0 because the plane starts from a standstill

`v = 350mi/h` -- final velocity

`t = 45s` -- time

Required

Determine the acceleration

This is calculated using Newton's first equation of motion

`v = u + at`

Convert time to hour

`t = 45s`

`t = (45)/(60)hr`

`t = 0.75hr`

Substitute values for v, u and t

`350 = 0 + a*0.75`

`350 = 0.75a`

Divide both sides by 0.75

`(350)/(0.75) = a`

`466.67 = a`

`a=466.67m/s^2`

Hence, the acceleration is 466.7m/s^2