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The driver of a 1.58 10 kg car is traveling cast at 10 ms and increases its speed to 30 mis east over 15
seconds. What is the initial and final momentum of the body?

Respuesta :

Answer:

p₀ = 1.53 10⁴ kgm / s,    p_f = 4.74 10⁴ kg m / s

Explanation:

The moment is defined by

         p = mv

the initial moment is

         p₀ = m v₀

indicate the mass of the car m = 1.58 10³ kg and its initial velocity v₀ = 10 m/s

           

         p₀ = 1.58 10³   10

         p₀ = 1.53 10⁴ kgm / s

the final moment is

         

indicate that it increases its speed at v = 30 m/s, in a time of t = 15 s

we look for the moment

         p_f = m v

         p_f = 1.58 10³   30

         p_f = 4.74 10⁴ kg m / s

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