ShmoopTube

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Thank you We sneak and here's your shmoop du jour

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Brought to you by grocery shopping while hungry Because when

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else will we remember that we need twelve boxes of

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cookies are checking falling graph Okay consider the graph of

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a carts displacement Which of the following are true about

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its motion will select two answers And here are the

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options All right well this is definitely one of those

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cards at the grocery store with that wheel that's all

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wonky making it impossible to push All right well let's

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look at our options Starting from the top Is the

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force acting on the cart constant Well looking at this

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graph it doesn't look very constant Tow us The velocity

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is all over the place as we know velocity is

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the rate of displacement overtime But this card is like

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us after spending an hour studying physics It doesn't know

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if it's coming or going so we can rule out

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a in order for option b to be correct The

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card has to be constantly gaining kinetic energy If the

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graph showed the cart consistently going in one direction then

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be would be right But we see the car goes

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In reverse and goes forward than slows down and goes

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in reverse again doesn't constantly gain kinetic energy at all

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so we can throw be out as well For c

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to be right the cart has to be going in

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at least two different directions We can see that the

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displacement or movement starts out negative then climbs into the

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positive range So the movement is definitely in at least

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three directions making option c one of the correct answers

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And does the car have a net gain of kinetic

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energy Well it ends up with a positive velocity after

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starting from zero So yeah he is correct as well

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Now that we got all that figured out we need

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to go figure out where to hide all these cookies

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