The speed of a vehicle is reduced with a constant acceleration from 72km/h to 18 km/h over 250m directly down an incline of lin25. The mass of the vehicle is 1.9
Mg and it has a constant resistance to motion of 350N.
Calculate the magnitude of the braking Force

Check​

The correct answer will be "1477.84 N".

Explanation:

Given that,

Mass,

m = 1.6 mg

or,

   = 1600 kg

Initial velocity,

u = 72 km/h

  =

  =

Final velocity,

v = 18 km/h

  =

  =

Covered distance,

s = 250 m

By using the below relation, we get

⇒  

On putting the values, we get

⇒  

⇒       (shows the deceleration)

Slope will be given as 1 in 25, then

⇒  

hence,

As we know,

⇒  

or,

⇒  

⇒  

On substituting all the values, we get

⇒                          

⇒                          

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