Calculating Stopping Time for a Dog on a Skateboard | Momentum Question

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To determine the stopping time for a 24.0 kg dog on a skateboard with a combined mass of 27.6 kg, a force of 9.0 N is applied. The relevant equations include the momentum formula P=MV and the force-momentum relationship F(change in time)=Pf-Pi. To calculate the stopping time, the initial momentum must be determined by multiplying the total mass by the initial velocity of 3.0 m/s. By substituting the known values into the equations, the change in time can be calculated. Understanding these calculations is essential for solving the problem effectively.
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Homework Statement


A 24.0kg dog running at a speed of 3.0m/s jumps onto a stationary skateboard that has a mass of 3.6 kg how long will it take a force with a magnitude of 9.0 N to stop the skateboard and the dog?


Homework Equations


F(change in time)=Pf-Pi
P=MV


The Attempt at a Solution


I don't understand how to calculate the length of time that it takes for the 9.0N force is going to slow down the skateboard and the dog.
 
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You can use the formula you wrote: F(change in time)=Pf-Pi
Put in the numbers for the force and momentum and then you can calculate the change in time.
 

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