Question

An airplane traveling 245 m/s east experiences turbulence, so the pilot slows down to 230 m/s. It takes the pilot 7 seconds to slow down to this speed. What is the acceleration of the plane? Round your answer to the nearest hundredth.

Answer 1

the deceleration of the plane would be -2.14 m/s^2

Answer 2

- 2.14 m/s^2

Step-by-step explanation:

initial velocity , u = 245 m/s

final velocity, v = 230 m/s

time taken , t = 7 second

By use of first equation of motion,

v = u + a t

where, a be the acceleration.

Substitute the values of v, u and t

230 = 245 + a x 7

a = - 2.14 m/s^2

the acceleration is negative, it means the airplane is slowing.