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If an object has 0 momentum, does it have kinetic energy? Explain your answer. - Science and Technology

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प्रश्न

If an object has 0 momentum, does it have kinetic energy? Explain your answer.

टीपा लिहा
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उत्तर

Momentum of an object, P = mv

If P = 0

⇒ `"v" = 0`

This is because the mass of the object can never be 0.

Now, the kinetic energy of the object, `"K" = 1/2 xx "m" xx "v"^2`

Since, v = 0

⇒ K = 0

Hence, when the object has zero momentum, its kinetic energy is also zero.

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पाठ 2: Work and Energy - Exercises [पृष्ठ २८]

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बालभारती Science and Technology [English] 9 Standard Maharashtra State Board
पाठ 2 Work and Energy
Exercises | Q 1. e. | पृष्ठ २८

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