Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Physics
Physics
Problem
Two objects
A
A
A
and
B
B
B
possess the same kinetic energy
K
K
K
but have different masses
m
A
m_A
m
A
and
m
B
m_B
m
B
. a. (i) Derive an expression for the ratio of their momenta
p
A
:
p
B
p_A : p_B
p
A
:
p
B
in terms of
m
A
m_A
m
A
and
m
B
m_B
m
B
. b. (ii) Hence find
p
A
:
p
B
p_A : p_B
p
A
:
p
B
if
m
A
=
4
m
B
m_A = 4m_B
m
A
=
4
m
B
.
Browse the problem library