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momentum for physics?
if one ball weighing 2 kg at 5 m/s(going to the right) collides in an inelastic collision against a ball going 10 m/s wighing 2 kg(going to the left), what will be the velocity of the balls after the collision?
A. 5 m/s to the left
B. 2.5 m/s ro the left
C. 11 /s to the left
D. 15 m/s to the left
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2 Answers
- billrussell42Lv 71 decade agoFavorite Answer
momentum is conserved
Initial momentum. to the right is +, to the left is -
Initial Momentum = 2*5 - 10*2 = -10
Final momentum is the same
Final velocity = -10/(2+2) = -10/4 = -2.5
B
- Anonymous1 decade ago
D becuase energy is transferred.