(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

1. If a 0.2 kg ball is dropped from a height of 8 m, what is its kinetic energy when it hits the ground?

2. Jane, looking for Tarzan, is running at top speed (4.6 m/s) and grabs a vine hanging vertically from a tall tree in the jungle. How high can she swing upward?

2. Relevant equations

Kinetic Energy = (1/2) mass*gravity*height

Potential Energy= mass*gravity*height

not sure if this equation is right.... distance=(1/2)(gravity)(time^2)

Velocity= (change in distance)/time

3. The attempt at a solution

my work got deleted for both the question (error in webassign) and now I have no idea how I got the answers. (both wrong) But they were 9.5J for the first one and 14.2m for the second question.

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: 2 Quck Questions on Work and Energy

**Physics Forums | Science Articles, Homework Help, Discussion**