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Welcome back to new bride.
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My name is kevin chirac, so we have a situation here where there's an apple that has fallen from a certain height.
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It comes in contact with some grass and then eventually slows down to its the last location, which is about six, actually in six centimeters below the grasses height start off two meters.
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Then we go teoh six centimeters or when 06 meters and then we're gonna end up all call this a zero.
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We're being asked to figure out what is the force that the grass exerts.
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So it's right that nf equals question mark.
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Well, from here, let's see what we can find out.
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We know that we're going to be building up some speed during this part and in slowing down during this part.
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So let's break this into two different problems.
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The 1st 1 is going to be a vf is equal to x.
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Vf squared is equal to the i squared plus to a delta x schematics problem.
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We don't know what the f squared is.
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What we do know.
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The initial velocity squared zero to a x that b two times the acceleration constant of 9.8 and then multiplying that by two meters.
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So that's gonna be equal to four times 9.8, which i'm just throwing in my calculator and i get that to be 39.2 and then we're going to square root.
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That answer and that comes out to about 6.26 there we have it.
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Now that is going to be slowed from the f of equal to 6.26 meters per second down to zero.
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In this second part by an accelerations, we can find that one out as well.
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So we're gonna do the exact same problem.
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But almost in reverse.
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Its dvf squared equals v...