Question

two masses of 1 g and 9 g are moving with equal kinetic energies.the the ratio of the magnitudes of their respective linear momenta is a)1:9 b)9:1 c) 1:3 d) 3:1​

Answer 1

Answer:

option c is correct

Explanation:

KE =p²/2m

for first mass

KE1=p1²/(2 X 1)

for second mass KE2=p2²/(2 X 9)

according to question

KE1=KE2

p1²/(2 X 1)=p2²/(2 X 9)

p1²/p2²=1/9

p1/p2=1/3

p1:p2=1:3