A 40000 kg freight car is coasting at a speed of 5.0 m/s along a straight...

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science physics

Answer 1

Answer #1

solution! U30 7f mtv m2 Before collision After collision Givent m, Kg 30000 kg V = 5 m/s U20 mld. = 40000 m₂ = now, we we kn

Answer 2

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