Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Physics
Physics
Problem
A stone is dropped from the top of a
40
m
40\,\text{m}
40
m
high cliff. When the stone is
20
m
20\,\text{m}
20
m
above the ground, what fraction of its original gravitational potential energy has been converted into kinetic energy? a)
3
4
\dfrac{3}{4}
4
3
b)
1
4
\dfrac{1}{4}
4
1
c)
1
2
\dfrac{1}{2}
2
1
d) All of it
Browse the problem library