I’m having trouble with this question. The right answer is B but I’m not sure why.
hi!
momentum is conserved so:
pi = pf
0 = my * vy - mx * vx
mx * vx = my * vy
3vx = 6vy
vx = 2vy
total Ec = 1/2mxvx² + 1/2myvy²
1 = 1/2 * 3 * 4 * (2vy)² + 1/2 * 6 * vy²
1 = 9vy²
1/3 = vy = 0,333 ms⁻¹
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I see! Thank you Juliette!