Question

an airplane traveling 245 m/s east experienced turbulence, so the pilot decided to slow down to 230 m/s. it took the pilot 7 seconds to get down to this speed. what is the acceleration of the plane? (round your answer to the nearest whole number.)

Answer 1

Your answer would be -2m/s2

Answer 2

Acceleration of the plane,
`a=-2.14\ m/s^2`

Step-by-step explanation:

It is given that,

Initial speed of the airplane, u = 245 m/s

Final speed of the airplane as it slows down, v = 230 m/s

It took the pilot 7 seconds to get down to its final speed. Let a is the acceleration of the plane. We know that the rate of change of velocity of an object is called its acceleration. The mathematical expression is given by :

`a=(v-u)/(t)`

`a=((230-245)\ m/s)/(7\ s)`

`a=-2.14\ m/s^2`

The negative sign shows that the airplane is slowing down or deceleration. Hence, this is the required solution.