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Kids are pelting a window with snowballs. On average, two snowballs of roughly 300-g mass hit the window each second, moving horizontally at some 10 m/s. The snowballs drop vertically to the ground after hitting the window.

Required:
Estimate the average force exerted on the window.

Respuesta :

Answer:

The average force exerted on the window due to two snowballs is 6 N

Explanation:

Given:

Mass of snowballs [tex]m = 300 \times 10^{-3}[/tex] Kg

Velocity of snowball [tex]v = 10 \frac{m}{s}[/tex]

For finding the average force,

Force is equal to the change in momentum,

   [tex]F = \frac{dP}{dt}[/tex]

Here, final velocity is zero so we write,

 [tex]F = \frac{mv}{1}[/tex]

Where [tex]dt = 1[/tex] sec

 [tex]F = 300 \times 10^{-30} \times 10[/tex]

[tex]F = 3[/tex] N

Above value of force is due to one ball, but here given in question there are two ball,

[tex]F = 3 \times 2[/tex]

[tex]F = 6[/tex] N

Therefore, the average force exerted on the window due to two snowballs is 6 N

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