Verified Answer :

The horse has a greater momentum.

Answer: The momentum of horse will be more than the momentum of dog.

Explanation:

Let the momentum of dog and horse be \(P_d\) and \(P_h\)

Mass of the dog = \(M_d\)

Mass of the horse = \(M_h\)

Given that velocity with which dog is running is equal to the velocity with which horse is running.

\(V_d=V_h=V\)

\(Momentum=\text{mass of the body}\times \text{velocity of body}=P=MV\)

\(P_d=M_d\times V\)..(1)

\(P_h=M_h\times V\)..(2)

From (1) and(2) we can say that \(P_d

Since,the mass of horse is larger than the mass of the dog the momentum of the horse will be more than the momentum of the dog.