Answer:
v = 88.89 [m/s]
Step-by-step explanation:
To solve this problem we must use the principle of conservation of momentum which tells us that the initial momentum of a body plus the momentum added to that body will be equal to the final momentum of the body.
We must make up the following equation:
![F*t = m*v](https://img.qammunity.org/2022/formulas/physics/high-school/58vc0d42ja1di4ei7h10zpc7f7pmlwtvtb.png)
where:
F = force applied = 4000 [N]
t = time = 0.001 [s]
m = mass = 0.045 [kg]
v = velocity [m/s]
![4000*0.001=0.045*v\\v=88.89[m/s]](https://img.qammunity.org/2022/formulas/physics/high-school/q4bnp7rizrohxpe39z3wevteept1sje4wn.png)