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

Answer:

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

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 :

$a=\dfrac{v-u}{t}$

$a=\dfrac{(230-245)\ m/s}{7\ s}$

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

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