Answer : The momentum of the deer is, 2482 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 = 146 kg
v = velocity = 17 m/s
Now put all the given value in the above formula, we get:


Therefore, the momentum of the deer is, 2482 kg.m/s