Question

Two bodies of masses m1 and m2 are moving with same kinetic energy.Calculate (i) Ratio of their velocity​

Answer 1

Answer:

Explanation:

Solution

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Correct option is

C

m  

2

​

 

m  

1

​

 

​

 

​

 

K  

1

​

=K  

2

​

⇒  

2m  

1

​

 

p  

1

2

​

 

​

=  

2m  

2

​

 

p  

2

2

​

 

​

 

p  

2

2

​

 

p  

1

2

​

 

​

=  

m  

2

​

 

m  

1

​

 

​

 

p  

2

​

 

p  

1

​

 

​

=  

m  

2

​

 

m  

1

​

 

​

 

​

Answer 2

Answer:

Kinetic energy, K=

2m

p

2

where p= momentum and m= mass

So, p=

2mK

Thus, =

p

2

p

1

=

2m

2

K

2m

1

K

=

m

1

/m

2