ShmoopTube

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Thank you We sneak and here's your shmoop dooz your

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brought to you by toy cars when we were little

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We used to love playing with toy cars but our

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insurance premiums only just went through the roof Atticus is

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playing with his new hot wheels set He assembles a

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ramp That's two leaders tallinn places a six kilogram car

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at the top of the ramp Six kilograms You kidding

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me Hot wheels with cold way that's very heavy hot

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wheels car way don't write this way The car reaches

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the speed of five meters per second at the instant

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it crosses the halfway point of the ram What is

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the total mechanical energy of the system And hear the

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potential answers like fifteen pound car His cards were ounces

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all right mechanical energy doesn't mean we're excited because we're

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doing the robot like that Although we do have some

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pretty sweet robotic dance moves but separate issue no mechanical

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injury is the sum of potential energy plus kinetic energy

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let's tackle potential energy first potential energy equals mass times

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gravity times height In this scenario the highest two meters

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gravity is always his ten meters per second squared and

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the car has a massive six freaking kilograms That's very

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big waken Plug the numbers into the equation to get

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the potential energy which comes to one hundred twenty jules

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now kinetic energy equals one half of mass times the

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square of velocity Got it all right now are kinetic

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energy here equals one half of six kilograms times the

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square of five meters per second giving us a kinetic

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energy of seventy five jewels on lookout We did the

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math All right Well that does it for the heavy

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lifting Now we just add the two numbers together to

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get the total mechanical energy that seventy five jewels lost

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One hundred twenty Jules gives us a total mechanical energy

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of one hundred ninety five jewels Option d is the

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correct answer As long as we can remember the equations

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the math and physics is pretty easy We like to

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think of the equations like the owner's manual of the

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car before we started road trip We have to know

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how to start the car Justice seats open the gas

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tank You know that kind of stuff Actual equation is

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like the directions for our trip But if we don't

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know how to operate the vehicle We'll never get their

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way Just need to remember that when it comes to

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driving safety first but be a boring way to play

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hot wheels Go back through the roof there that's Really 00:02:20.13 --> [endTime] cool

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