- #1

drierplease

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## Homework Statement

A pumpkin was dropped from a balcony of a skyscraper. The pumpkin happened to land on a sidewalk force sensor and the below data was collected. The pumpkin weighs 2.7kg.

a) From what height was the pumpkin dropped?

b) From what floor of the skyscraper was the pumpkin probably dropped?

## Homework Equations

Potential Before = Kinetic After: mgh = (1/2)mv^2

Solving for v gives: v = sqrt(2gh)

a = F/m

Vf = a*t+Vi

Sf = .5*at^2+Vi*t+ Si

## The Attempt at a Solution

First I used mgh = .5mv^2 and solved for v.

This gave me v = sqrt(2gh)

I figure that finding the area under the curve of the graph gives the total force on the pumpkin as it is hitting the ground. I haven't done this yet, but I am not too worried about getting an exact answer for this part. I more want to make sure I know how to solve the rest of the problem.

I tried using kinematic equations to solve for height, but I ended up with h being 0, so I think I am not using the right concept and/or equation here.

We are currently studying conservation of momentum, but I don't see how that is helpful here for determining the height the object was initially dropped from.

Hopefully I am missing something obvious?

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