At a coal mine, a train engine bumps an empty hopper car that has a mass of 1 * 10^4 kg such that it rolls at a constant speed of 2 m/s under a coal storage bin. When the car triggers a switch on the track under the storage bin, the bin drops a load of 1.2*10^4 kg of coal into the hopper car. What is the speed of the cart after the additional coal?
Answers: 2
Physics, 21.06.2019 17:20, student0724
If you were to drop a rock from a tall building, assuming that it had not yet hit the ground, and neglecting air resistance. what is its vertical displacement (in m) after 6 s?
Answers: 1
Physics, 22.06.2019 08:20, cutechickens13
A3030 cmcm wrench is used to loosen a bolt with a force applied 0.30.3 mm from the bolt. it takes 6060 nn to loosen the bolt when the force is applied perpendicular to the wrench. how much force would it take if the force was applied at a 3030 degree angle from perpendicular? a 3030 cmcm wrench is used to loosen a bolt with a force applied 0.30.3 mm from the bolt. it takes 6060 nn to loosen the bolt when the force is applied perpendicular to the wrench. how much force would it take if the force was applied at a 3030 degree angle from perpendicular?
Answers: 3
At a coal mine, a train engine bumps an empty hopper car that has a mass of 1 * 10^4 kg such that it...
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