Answered

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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 integer.)

–2 m/s2
2 m/s2
67 m/s2
–67 m/s2

Sagot :

ardni313

The acceleration of the plane : -2 m/s²(negative=deceleration)

Further explanation

Given

vo=245 m/s

vt=230 m/s

t = 7 s

Required

The acceleration

Solution

Motion with constant acceleration

[tex]\tt v_t=v_o+at[/tex]

Input the value

[tex]\tt 230=245+a.7\\\\-15=7a\Rightarrow a=-2.14\approx rounded~-2~m/s^2[/tex]

Answer:

-2m/s²

Explanation:

Edge 2020

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