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UkoKoshka [18]
3 years ago
6

HELP PLS! :/

Physics
1 answer:
deff fn [24]3 years ago
4 0

Answer:

31.28m/s

Explanation:

We can use the third key equation of accelerated motion

Δd = viΔt+1/2aΔt^2

subtitute in the values we know

41.6 = vi(1.89)+1/2(-9.8)(1.89)^2

41.6 = vi(1.89) - 17.52

59.12 = vi(1.89)

vi = 31.28

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Explanation:

This problem involves the application of newton's second law of motion we would treat both boxes as a composite body, combining their masses. The net force (the sum of all forces acting on the boxes) causes the mass M (both boxes) to move with an acceleration a. Three forces act on the boxes, F and the two frictional forces.

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