01a. A 123000 kg train travels North with a constant speed of 7.78 m/s for 5 hours. Calculate the train's momentum. 01b. The train's brakes are applied and exert 4500 N of force for a period of time to reduce the trains momentum to 283000 kgm/s. Calculate the new speed of the train.
01a. A 123000 kg train travels North with a constant speed of 7.78 m/s for 5 hours. Calculate the train's momentum. 01b. The train's brakes are applied and exert 4500 N of force for a period of time to reduce the trains momentum to 283000 kgm/s. Calculate the new speed of the train.
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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I need help with number one please and round all numbers to three significant digits please
Transcribed Image Text:01a. A 123000 kg train travels North with a constant speed
of 7.78 m/s for 5 hours. Calculate the train's
momentum.
01b. The train's brakes are applied and exert 4500 N of
force for a period of time to reduce the trains
momentum to 283000 kgm/s. Calculate the new
speed of the train.
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