Two objects and possess the same kinetic energy but have different masses and .

PHYSICS · Multi-part · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

Two objects

A

and

B

possess the same kinetic energy

K

but have different masses

m_A

and

m_B

. (i) Derive an expression for the ratio of their momenta

p_A : p_B

in terms of

m_A

and

m_B

. (ii) Hence find

p_A : p_B

m_A = 4m_B