Question

The ratio of kinetic energies of two bodies is 2 : 1 and their momenta are in the ratio of 1:2.
The ratio of their masses is
1) 1:4
2)4:1
3) 8:1
4) 1:8​

Answer 1

Explanation:

K.E=

2

1

2m

p

2

where p=momentum

2

1

p

2

2

/m

2

2

1

p

2

1

/m

1

=(

p

2

p

1

)

2

(

m

1

m

2

)

1

2

=(

2

1

)

2

(

m

1

m

2

)

m

2

m

1

=1:8

Answer 2

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