8. A person with a mass of 15 kg is walking on a flat surface at a velocity of 5 m/s. What is the walker's momentum?

Answer: The correct answer is 75 kg m/s.

Explanation:

The expression of the momentum in terms of velocity and mass is as follows;

p=mv

Here, m is the mass of the object and v is the velocity.

It is given in the problem that a person with a mass of 15 kg is walking on a flat surface at a velocity of 5 m/s.

Calculate the walker's momentum.

Put m = 15 kg and v = 5 m/s in the above expression.

p = (15) (5)

p = 75 kg m/s

Therefore, the momentum of the speedboat is 75 kg m/s.