Question

The linear momentum of a runner in a 100 m dash is 750 kg m/s. If the runners speed is 10 m/s, what is his mass?

Answer 1

The mass of the runner is equal to 75 kg.

Explanation:

• the linear momentum is the product between the mass of a person and the speed by which he is moving. The linear momentum is equal to 750 kilogram metre per second.

• As a result of this the mass of the runner is equal to linear momentum/ speed= 750/10= 75kg.
• the given value of the distance covered by the runner which is hundred metre is of no use for finding the the mass of the person

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