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A motorcycle with a mass of 100kg, slowly rolls over the edge of a cliff and falls for 3 seconds before it reaches the bottom of a gully. Its momentum (in units of Kilogram meters per second) just before it hits bottom and became burned rubber and scrap metal wasA 4000B 1000c 3000D 9000

Respuesta :

Answer:

The momentum just before it hits bottom is 3000 kg-m/s.

Explanation:

Given that,

Mass of the mototcycle, m = 100 kg

Is slowly rolls over the edge of a cliff and falls for 3 seconds before it reaches the bottom of a gully. We know that the rate of change of linear momentum is proportional to the applied external force. So,

[tex]F=\dfrac{P}{t}[/tex]

P is momentum

Here, F = mg

[tex]P=mg\times t\\\\P=100\ kg\times 10\ m/s^2\times 3\ s\\\\P=3000\ kg-m/s[/tex]

So, the momentum just before it hits bottom is 3000 kg-m/s. Hence, this is the required solution.

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