A boy of mass 40kg while running develops a momentum of 180Ns. Calculate the velocity of the boy

Explanation:

The formula for momentum is:

(p is momentum, m is mass, and v is velocity)

Let's rearrange the formula for velocity, or v.

Velocity can be found by dividing the momentum by the mass.

The momentum is 180 kilograms meter per second. The mass of the boy is 40 kilograms.

Substitute the values into the formula.

Divide. Note that the kilograms or "kg" will cancel each other out.

The velocity of the boy is 4.5 meters per second.

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