- #36

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the speed after is 15.34m/s

how would I find KE without knowing what mass is?

how would I find KE without knowing what mass is?

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- Thread starter Sneakatone
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- #36

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the speed after is 15.34m/s

how would I find KE without knowing what mass is?

how would I find KE without knowing what mass is?

- #37

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How did you get that speed? What does that speed mean?1/2mv^2=mgh

v=sqrt(gh2)

v=15.34

is this the right method?

- #38

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the speed means is that it is the velocity where from the original launch height.

- #39

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No.

What is the speed of the pair right after the clown grabs the performer ?

Then what is the kinetic energy of the pair at that moment ?

the speed after is 15.34m/s

how would I find KE without knowing what mass is?

Doc pointed out that 15.34m/s is the speed of the clown just before she grabs the performer.

All you know about mass is that the mass of the clown is the same as the mass of the performer. -- but that's enough.

- #40

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with that speed I found a height of 12m from using 1/2mv^2=mgh,

what am I suppose to do with that?

what am I suppose to do with that?

- #41

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What speed are you referring to?with that speed I found a height of 12m from using 1/2mv^2=mgh,

what am I suppose to do with that?

Please use the "Quote" feature of the Forum, or state the value you are referring to, directly in your post.

- #42

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- #43

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If the clown had

You still haven't computed the speed of the clown - performer combination immediately after the clown grabs the performer.

Here's a hint:

The momentum of the clown plus the performer is the same just before the grabbing and just after the grabbing.

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