Question

Question #fa8ed

Answer 1

`-"810 m/s"^2`

Explanation:

Use this equation of motion

`v^2 - u^2 = 2aS`

Where

• v = Final velocity
• u = Initial velocity
• a = Acceleration of object
• S = Displacement covered while changing velocity from `u` to `v`

Rearrange the equation and substitute the values

`a = (v^2 - u^2)/(2S) = (("0 m/s")^2 - ("1883.7 m/s")^2)/(2xx2.19 cancel"km" × (10^3 "m")/cancel"km") = -"810 m/s"^2`

Acceleration is negative because it’s in the direction opposite to that motion of aeroplane.