Asmall car and a large truck are both driving south at 40 km/h. which of the following is true?

a. the vehicles have no momentum because they have equal velocities.

b. the small car has less momentum because its mass is less than the mass of the truck.

c. the large truck has less momentum because its mass is greater than the mass of the car.

d. the vehicles have the same momentum because they have equal velocities.

explain answer so i can solve these questions in the future.