Answer :

MathPhys

Explanation:

Given:

v₀ = 250 mph

v = 0 mph

t = 25 s

Find: a

v = at + v₀

(0 mph) = a (25 s) + (250 mph)

a = -10 mph/s

ayfat23

The acceleration of the plane is [tex]- 10 mph[/tex]

  • Acceleration can be regarded as rate at which velocity changes with respect to time.
  • final speed=[tex]V(0)= 0mph[/tex]
  • The initial speed [tex](Vf)[/tex]  is given as[tex]250 mph[/tex]
  • acceleration (a) = ??
  • time taken [tex]= 25 s[/tex]
  • from law of motion   [tex]V= at +V(0)[/tex]

Then substitute, we have

  • [tex]0= 25a + 250[/tex]
  • [tex]-25a= 250[/tex]
  • [tex]a= - \frac{250}{25}[/tex]

[tex]= - 10 mph/s[/tex]

Therefore, the acceleration is -10mph/s

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