Two particles collide and bounce apart. The figure shows the initial momenta of

Question

Two particles collide and bounce apart. The figure shows the initial momenta of both and the final momentum of particle 2.(Figure 1) Part A What is the x component of final momentum of particle 1? Express your answer using one significant figure.

Part B What is the y component of final momentum of particle 1? Express your answer using one significant figure.

Two particles collide and bounce apart. The figure shows the initial momenta of both and the final momentum of particle 2.(Figure 1) Part A What is the x component of final momentum of particle 1? Express your answer using one significant figure. Part B What is the y component of final momentum of particle 1? Express your answer using one significant figure.

Explanation / Answer

Recalling the conservation of linear momentum, we can say that

Total of all x-components before collision = total of all x-components after collision

Total of all y-components before collision = total of all y-components after collision


Before:-
P1(x) = +2; P2(x) = - 4
P1(y) = +2; P2(y) = +1

After:-
P1(x) = ?; P2(x) = 0
P1(y) = ?; P2(y) = -1

Therefore,
for P1(x) after collision we have
(+2 - 4) = ? + 0
? = -2

for P1(y) after collision we have
(+2 +1) = ? -1

? = 4

So P1(x) after collision = - 2
P1(y) after collision = 4

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