Q.

A body is moving with a velocity v, breaks up into two equal parts. One of the part retraces back with velocity v. Then the velocity of the other part is

see full answer

Start JEE / NEET / Foundation preparation at rupees 99/day !!

21% of IItians & 23% of AIIMS delhi doctors are from Sri Chaitanya institute !!
An Intiative by Sri Chaitanya

a

v in forward direction

b

3v in forward direction

c

v in backward direction

d

3v in backward direction

answer is B.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

Let the initial mass of body = m Initial linear momentum = mv   …(i)When it breaks into equal masses then one of the fragment retrace back with same velocity ∴ Final linear momentum = m2(−v)+m2(v2)  …(ii)By the conservation of linear momentum ⇒mv=−mv2+mv22⇒v2=3vi.e. other fragment moves with velocity 3v in forward direction
Watch 3-min video & get full concept clarity
score_test_img

Get Expert Academic Guidance – Connect with a Counselor Today!

whats app icon