SaraNextGen Study App [2022-23]
Last Updated On 23-10-2022 - By Sara

A ball collides elastically with another ball of the same mass. The collision is oblique and initially oneoftheballs was at rest. Afterthe collision,the two balls move with same speed. What will be the angle between the velocitiesof the balls after the collision?

a)

 

b)

 

c)

 

d)

 


Question ID - 100342 :-

A ball collides elastically with another ball of the same mass. The collision is oblique and initially oneoftheballs was at rest. Afterthe collision,the two balls move with same speed. What will be the angle between the velocitiesof the balls after the collision?

a)

 

b)

 

c)

 

d)

 

1 Answer
5876 Votes
3537

Answer Key : (d) -

(d)

Applying law of conservation of momentum, we get

(i)

    (ii)

According to law of conservation of KE,

or (iii)

From Eqs.(ii) and (iii),we have

Or   or 



Next Question :

Match the symbols with statement

A. Diseased (death)

B. Carrier (female) of X-linked recessive gene

C. Marriage in blood relatives

D. Unknown sex

Codes

A   B   C   D

1)

1   2   3   4

2)

6    5  7   4

3)

2   1   3   4

4)

6   2   3   4


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