Physics, 13.05.2021 21:10 groverparham3
Two model train cars roll to the right. Both have masses of 1Kg. One has a velocity of 2m/s. It catches up with and couples to the other which had a velocity of 1m/s. What is the velocity of the combined mass? m1 v1i + m2 v2i = m1 v1f + m2 v2
Answers: 1
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Matter is needed to transfer thermal energy bya. conductionb. convectionc. radiation d. both a & b.
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During a medieval siege of a castle, the attacking army uses a trebuchet to hurl heavy stones at the castle walls. if the trebuchet launches the stones with a velocity of at an angle of 50.0Β°, (a) how long does it take the stone to hit the ground? (b) what is the maximum distance that the trebuchet can be from the castle wall to be in range? (c) how high will the stones go? show all your work.
Answers: 2
Two model train cars roll to the right. Both have masses of 1Kg. One has a velocity of 2m/s. It catc...
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