- #1

supernova1203

- 210

- 0

## Homework Statement

45a)

A watermelon with a mass of 2 kg falls out of a tree house that is 5.4 m above the ground. What is the speed of the watermelon just before it hits the ground.

(this part i have solved)

mass = 2kg

Δd= 5.4m

v=?

v1^2 =v2^2+2gΔd

v1^2=0+2gΔd

=0+2(9.8)(5.4)

v1^2=√105.84

**v1^2=10.28 m/s**

Now on to the part i didnt quite get.

__45b) A cantaloupe with a mass of 0.45kg falls out of the other side of the tree house. It hits a tree branch at a speed of 6.3 m/s. How high is the tree branch from the ground?__## Homework Equations

v1^2 =v2^2+2gΔd

v1^2-v2^2/2g=Δd

## The Attempt at a Solution

45b)

v1=0m/s

v2=6.3m/s

mass = 0.45 kg

v1^2-v2^2/2g=Δd

v1^2-v2^2/2g=Δd

6.3^2-0/2g=Δd

6.3^2/2(9.8)=Δd

6.3^2/19.6=Δd

39.69/19.6=Δd

__2.025m = Δd__thats the height i got, if it is not correct, can someone show me how to get the right height? or better yet get the right height and i can analyze and figure out how you got the right height?