Question

Two bodies having kinetic energy K and 2K have equal masses.
Their momenta are P, and P respectively, then P/P is
1) 1:1
2) 1:3
3) 1:4
4) 1:2​

Answer 1

Answer:

given

both have same mass i.e m

their kinetic energy is k and 2k respectively..

ratio of their kinetic energy is 1/2

1/2 = 1/2 x m x (v1)^2/1/2 x m x (v2)^2

v1/v2 = 1/√2

ratio of momentum is mv1/mv2

i.e. v1/v2 = 1/√2

oh no my answer is not matched to options but my way is correct...