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Two bodies  and  of definite shape (dimensions of bodies are not ignored).  is moving with speed of 10  and  is in rest, collide elastically. The

a)

Body  comes to rest and  moves with speed of 10

b)

They may move perpendicular to each other

c)

 and  may come to rest

d)

They must move perpendicular to each other



Question ID - 52984 | SaraNextGen Top Answer

Two bodies  and  of definite shape (dimensions of bodies are not ignored).  is moving with speed of 10  and  is in rest, collide elastically. The

a)

Body  comes to rest and  moves with speed of 10

b)

They may move perpendicular to each other

c)

 and  may come to rest

d)

They must move perpendicular to each other

1 Answer
127 votes
Answer Key / Explanation : (b) -

(b)

(a) This is only possible when collision is head on elastic.

(b) When collision is oblique elastic, then in this case, both bodies move perpendicular to each other after collision

(c) Since, in elastic collision, kinetic energy of system remains constant so, this is not possible.

(d) The same reason as (b).

127 votes


127