Answer : The momentum is, 357 kg.m/s
Explanation :
Momentum : It is defined as the motion of a moving body. Or it is defined as the product of mass of velocity of an object.
Formula of momentum is:

where,
p = momentum
m = mass = 75.0 kg
v = velocity = 5.00 m/s
Now put all the given values in the above formula, we get:

Therefore. the momentum is, 357 kg.m/s