Question

Question 1.
A light and a heavy object have the same momentum. Find out the ratio of their kinetic energies. Which one has a larger kinetic energy?




WHO will give me the correct answer I will make as BRAINLIST​

Answer 1

Explanation:

k.e. = p²/2m

so body which have low mass will have higher kinetic energy

Answer 2

Answer:

p

1

=m

1

ν

1

p

2

=m

2

ν

2

But p

1

=p

2

or m

1

ν

1

=m

2

ν

2

If m

1

<m

2

then ν

1

<ν

2

(K.E)

1

=

2

1

m

1

ν

1

2

(K.E)

2

=

2

1

m

2

ν

2

2

(K.E)

1

=

2

1

(m

1

ν

1

)ν

1

=

2

1

p

1

ν

1

(K.E)

2

=

2

1

(m

2

ν

2

)ν

2

=

2

1

p

2

ν

2

(K.E)

2

(K.E)

1

=

2

1

p

2

ν

2

2

1

p

1

ν

1

=

ν

2

ν−1

But ν

1

>ν

2

Therefore (K.E)

1

>(K.E)

2