A rock hits a window and stops in 0.15 seconds. The net force on the rock is 58N during the collision. What is the magnitude of the change in momentum of the rock?

Respuesta :

Answer:

The change in momentum is  [tex]\Delta p = 0.7 \ kg\cdot m \cdot s^{-1}[/tex]

Explanation:

From the question we are told that

    The time taken for the stone to stop is [tex]\Delta t = 0.15 \ seconds[/tex]

    The net force on the rock is  [tex]F = 58 \ N[/tex]

   

The impulse of the rock can be mathematically represented as

     [tex]I = F * \Delta t[/tex]

Substituting values

     [tex]I = 58 * 0.15[/tex]

    [tex]I = 0.7\ kg * m * s^{-1}[/tex]

Now impulse is defined as  the rate at which momentum change

   Hence the change in momentum [tex]\Delta p[/tex]  of the rock is equal to the impulse of the rock

 So  

       [tex]\Delta p = I = 0.7 \ kg\cdot m \cdot s^{-1}[/tex]

Answer:

8.7

Explanation: