With such a system, you can avoid dealing with the internal contact force when using the linear impulse-momentum equation. Step 1: FBDs Draw an FBD of A+B. Step 2: Kinetics (linear impulse/momentum) ...

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Impulse-momentum can be used to calculate the average force on the ball. \(F = -72.5N \,\) (value is negative as moving to the left) The negative sign in front of the \(-72.5N\) indicates that the ...

When two objects collide the total momentum before the collision is equal to the total momentum after the collision (in the absence of external forces). This is the law of conservation of momentum.