Question

1. when should you use the ( f_{net} cdot delta t ) side of the impulse - momentum theorem?

this side of the equation should be used when the impulse does not equal the change in momentum.
this side of the equation should be used when the force being applied to the object causes the object to d
this side of the equation should be used when an object has a force applied for a certain time period.
this side of the equation should be used when the velocity of an object changes, changing that objects m

Explanation:

The impulse - momentum theorem is \(J = F_{net}\cdot\Delta t=\Delta p\). When we know the net force \(F_{net}\) acting on an object and the time interval \(\Delta t\) for which the force is applied, we use the \(F_{net}\cdot\Delta t\) side of the equation.

Answer:

This side of the equation should be used when an object has a force applied for a certain time period.