Assume: Moving to the right is positive. A(n) 8.8 g object moving to the right a

Question

Assume: Moving to the right is positive. A(n) 8.8 g object moving to the right at 30 cm/s makes anelastic head-on collision with a 18 g object moving in the oppositedirection at 43 cm/s. Find the velocity of the first objectimmediately after the first collision. Answer in units ofcm/s. b) Find the velocity of the second object after the collision.Answer in units of cm/s. Assume: Moving to the right is positive. A(n) 8.8 g object moving to the right at 30 cm/s makes anelastic head-on collision with a 18 g object moving in the oppositedirection at 43 cm/s. Find the velocity of the first objectimmediately after the first collision. Answer in units ofcm/s. b) Find the velocity of the second object after the collision.Answer in units of cm/s.

Explanation / Answer

masses m = 8.8 g            M = 18 g Initial velocities u = 30 cm / s                       U = -43 cm / s let the velocity of the 1 st object after collision be v and 2nd object be V for head on eleastic collision , coeffciient ofrestitution e= 1    ( V - v) / ( u - U ) = 1          V - v =73                       V = v + 73   ----( 1) from alw of conservation of momentum , mu + MU = mv + MV           264 - 774 = 8.8 v + 18 ( v + 73 )                            = 26.8 v + 1314                   26.8 v = -1824                          v = -68 cm / s from eq ( 1) V = 5 cm / s

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