CAN ANYONE PLEASE HELP ME WITH THIS ONE ITS URGENTLY NEEDED

Physics

1 answer:

denis-greek [22]3 years ago

4 0

Answer:

Explanation:

conservation of momentum

initial momentum is zero

Lets say that m₁ moves along the x axis

and m₂ moves along the y axis

in the y direction

0 = m₁(0) + m₂(30) + m₃(vy)

0 = m₁(0) + m₂(30) + 3m₂(vy)

-3m₂(vy) = m₂(30)

vy = -10 m/s

in the x direction

0 = m₁(30) + m₂(0) + m₃(vx)

0 = 2m₂(30) + m₂(0) + 3m₂(vx)

-3m₂(vx) = 2m₂(30)

vx = -20 m/s

v = √(-10² + -20²) = 10√5 m/s ≈ 22.36 m/s

θ = arctan(-10/-20) = 206.56505... ≈ 206.6° CCW from the + x axis

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