Author Topic: 1/27/2016 Dynamics  (Read 1226 times)

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1/27/2016 Dynamics
« on: January 27, 2016, 12:26:27 PM »
Question:

A 0.50-kg cart (#1) is pulled with a 1.0-N force for 1 second; another 0.50 kg cart (#2) is pulled with a 2.0 N-force for 0.50 seconds.

Which cart (#1 or #2) has the greatest acceleration?

Which cart (#1 or #2) has the greatest impulse?

Which cart (#1 or #2) has the greatest change in momentum?

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Re: 1/27/2016 Dynamics
« Reply #1 on: January 28, 2016, 08:12:29 AM »
Cart #2 has the greatest acceleration. Recall that acceleration depends on force and mass. They each have the same mass, yet cart #2 has the greater force.

The impulse is the same for each cart. Impulse is force*time and can be calculated to be 1.0 N*s for each cart.

The momentum change is the same for each cart. Momentum change equals the impulse; if each cart has the same impulse, then it would follow that they have the same momentum change.