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19 Nov 2019
A train is traveling south at 27.4 m/s when the brakes are applied.It slows down with a constant rate to a speed of 7.84 m/s in a timeof 9.76 s.
(a) Draw a graph of vx versus t for a 12 s interval (starting 2 sbefore the brakes are applied and ending 1 s after the brakes arereleased.) Let the x-axis point to the north.
(b) What is the acceleration of the train during the 9.76 sinterval?
_____ m/s^2 north
(c) How far does the train travel during the 9.76 s?
_____ m
A train is traveling south at 27.4 m/s when the brakes are applied.It slows down with a constant rate to a speed of 7.84 m/s in a timeof 9.76 s.
(a) Draw a graph of vx versus t for a 12 s interval (starting 2 sbefore the brakes are applied and ending 1 s after the brakes arereleased.) Let the x-axis point to the north.
(b) What is the acceleration of the train during the 9.76 sinterval?
_____ m/s^2 north
(c) How far does the train travel during the 9.76 s?
_____ m
Hubert KochLv2
21 Aug 2019
