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.
