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A coworker calls you at 9:00 a.m. at work and asks for a favor. He is having car trouble and will be an hour late for work. He explains that he has already been late for work twice this month and that a third time will cost him four hours of pay. He asks...

A train of mass 50,000kg and velocity of 30m/s collides with a stationary carraige of mass 10,000 kg. after the collision,both the train and the carraige moves off together as one body.determine the loss of kinetic energy due to the collision?

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An observer at a point P on a coast sights a ship in a direction N 41°39' E. The ship is at the same time directly east of a point Q, 18.6 km due north of P. Work to three significant digits. Find the distance of the ship from point P.