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. 2.14 m/s2 –2.14 m/s2 67.86 m/s2 –67.86 m/s2

Acceleration,    

Step-by-step explanation:

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

Final speed of the airplane, v = 230 m/s

The pilot takes 7 seconds to slow down to this speed. Let a is the acceleration of the plane. The change in velocity per unit time is called the acceleration of an object. It can be calculated as :

So, the acceleration of the plane is . Hence, the correct option is (b).

answer:  

step-by-step explanation:

here x represents the height of the pole,

and, the height of the shadow of the pole is 12 feet.

also, the angle of elevation from the top of the pole is 40°,

therefore,

by the low of sine,

which is the required equation for finding the value of x,