As shown in the figure, a 4kg ball initially moving with horizontal velocity v strikes the wall and rebounds with 75% of its initial speed. It then undergoes head on collision with the 6kg ball and sticks to it. If both start moving with common speed of 6m/s, then the value of v is.....

Asked by vatsalchoudhary41
| 11th Oct, 2015,
09:20: AM
Expert Answer:

Answered by Romal Bhansali
| 11th Oct, 2015,
07:45: PM
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Why can't I use P=VI here, and how can I determine when to use P=VI or P=I^2 R or P=V^2 / R
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