A trooper is moving due south along the freeway at a speed of 30.1 m/s when a red car passes the trooper. The red car moves with constant velocity of 45.4 m/s southward. At the instant the trooper's car is passed, the trooper begins to speed up at a constant rate of 2.0 m/s2. What is the maximum distance ahead of the trooper that is reached by the red car

Respuesta :

Answer:

The correct answer to the following question will be "41.87 m".

Explanation:

The given values are:

The speed of trooper = [tex]30.1 \ m/s[/tex]

The velocity of red car = [tex]45.4 \ m/s[/tex]

Now,

A red car goes as far as possible until the speed or velocity of the troops is the same as that of of the red car at

[tex]t=\frac{45-30}{2.7}[/tex]                                                              (∵ [tex]time=\frac{distance}{time}[/tex])

[tex]t=5.56 \ sec[/tex]

then,

The distance covered by trooper,

[tex]t1=30\times 5.56+\frac{1}{2}\times 2.7\times (5.56)^2[/tex]

   [tex]=208.33 \ m[/tex]

The distance covered by red car,

= [tex]45\times 5.56[/tex]

= [tex]250.2 \ m[/tex]

Maximum distance = [tex]250.2-208.33[/tex]

                                = [tex]41.87 \ m[/tex]