Atrain car with mass m1 = 515 kg is moving to the right with a speed of v1 = 7.5 m/s and collides with a second train car. the two cars latch together during the collision and then move off to the right at vf = 4.8 m/s. now the same two cars are involved in a second collision. the first car is again moving to the right with a speed of v1 = 7.5 m/s and collides with the second train car that is now moving to the left with a velocity v2 = -6 m/s before the collision. the two cars latch together at impact. what is the final velocity of the two-car system? (a positive velocity means the two train cars move to the right – a negative velocity means the two train cars move to the left.)
Answers: 2
Physics, 21.06.2019 16:30, nyce36
You throw a baseball directly upward at time t = 0 at an initial speed of 12.3 m/s. what is the maximum height the ball reaches above where it leaves your hand? at what times does the ball pass through half the maximum height? ignore air resistance and take g = 9.80 m/s2.
Answers: 1
Physics, 22.06.2019 05:30, ninaaforever
Aforklift raises a 1,020 n crate 3.50 m up to a shelf. how much work is done by the forklift on the crate? the forklift does j of work on the crate.
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Physics, 22.06.2019 18:30, Jasten
Arailroad car collides with and sticks to an identical railroad car that is initially at rest. after the collision, the total kinetic energy of the two cars is a) the same as before. b) half as much as before. c) one third as much as before. d) one fourth as much as before. e) twice as much as before.
Answers: 1
Atrain car with mass m1 = 515 kg is moving to the right with a speed of v1 = 7.5 m/s and collides wi...
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