Need help devising an easy physics question that sounds really hard

[Quicksilvre]

Is this a level? It's been a while since I took physics but isn't the result of F = ma measured in joules?

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The SI unit used to measure force is the newton (symbol N), which is equivalent to kg·m·s−2.

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Edit: I even quoted the right answer too. I am off my game today.

[Alobar]

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whats the answer to the fly thing.

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Im guessing 80 miles since the trucks crash into each other in an hour, and the fly is traveling 80 miles an hour

[stigmata]

multiple choice question, pleas provide answers!!!!

[slickpoppa]

[ QUOTE ]
Is this a level? It's been a while since I took physics but isn't the result of F = ma measured in joules?

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The SI unit used to measure force is the newton (symbol N), which is equivalent to kg·m·s−2.

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Joules is a unit of energy. Energy =/= force.

[SmileyEH]

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I'm more interested in how you measure total force in Joules.

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Me too. I'm not sure whether he's asking for the average force that operated on the dalmatian as it was being slowed down by the Jello, or the total energy absorbed by the jello. Either way it's not a difficult problem, but I don't think he even knows what he is asking.

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Yes, I assumed it was the 2nd case, but the correct answer is 6000 joules not 400 (30 meters total displacement x 20kg x 10m/s^2).

[Quicksilvre]

[ QUOTE ]
[ QUOTE ]
Is this a level? It's been a while since I took physics but isn't the result of F = ma measured in joules?

[ QUOTE ]
The SI unit used to measure force is the newton (symbol N), which is equivalent to kg·m·s−2.

[/ QUOTE ]

[/ QUOTE ]

Joules is a unit of energy. Energy =/= force.

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Crap, I meant to say "newton."

[SmileyEH]

Force = mass x accelleration = kg m/s^2
Mechanical energy = Force x distance = kg m^2/s^2

[Scorcho]

I wanna see this magical 80 mph fly

[slickpoppa]

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I'm more interested in how you measure total force in Joules.

[/ QUOTE ]

Me too. I'm not sure whether he's asking for the average force that operated on the dalmatian as it was being slowed down by the Jello, or the total energy absorbed by the jello. Either way it's not a difficult problem, but I don't think he even knows what he is asking.

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Yes, I assumed it was the 2nd case, but the correct answer is 600 joules not 400 (30 meters total displacement x 20kg).

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You're forgetting about the acceleration of gravity. You have to multiply by 9.8m/s^2 to get energy

Edit: look like you just noticed that

[JasonK]

Is the cat dead or alive?