Question

An object of mass 5kg is moving at a velocity 10m/s towards another object of mass 12kg moving at 7m/s they collide with each other larger object moves at velocity of 9m/s caculate the velocity of lighter object

Answer 1

Hi friend
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Your answer
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LET THE MASS OF FIRST OBJECT BE M1 AND INITIAL VELOCITY U1, FINAL VELOCITY V1.

LET THE MASS OF THE SECOND OBJECT BE M2 AND INITIAL VELOCITY U2, FINAL VELOCITY V2.

THEN,
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M1 = 5KG, U1 = 10 M/S, V1 =?

M2 = 12 KG, U2 = 7 M/S, V2 = 9 M/S

ACCORDING TO THE PRINCIPLE CONSERVATION OF MOMENTUM
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M1U1 + M2U2 = M1V1 + M2V2
(5×10) + (12× 7) = (5×V1) + (12×9)
50+84 = 5V1 + 108
5V1 = 134 - 108
5V1 = 26
V1 = 26/5 m/s
V1 = 5.2 m/s

THEREFORE,
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THE LIGHTER OBJECT MOVES WITH A VELOCITY OF 5.2 m/s.

HOPE IT HELPS

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