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Problem: A 75meter long train car accelerates uniformly from rest. The speed of the train is 18 m/s when the front of it is adjacent to a railway worker who is standing 180m from where the front of the train was when it began accelerating.
Part A: What is the speed of the train when it passes the railway work?
Can someone please explain what the heck is going on?
A 2.9-kg block slides with a speed of 1.6m/s on a frictionless horizontal surface until it encounters a spring.(a)if the block compreses the spring 4.8cm before coming to rest,what is the force constant of the spring?(b)What initial speed should the..
Mechanics: Center of Mass. A 60 kg woman and a 90 kg man stand 10.0 m apart on frictionless ice.
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The driver of a car wishes to pass a truck that is traveling at a constant speed of 20.9m/s . Initially, the car is also traveling at a speed 20.9m/s and its front bumper is a distance 23.1m behind the truck's rear bumper, What is the final speed ..
A clay ball of 0.1 kilogram is dropped 10 cm above a table. Determine what is its impulse
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