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Posted by on Wednesday, February 3, 2010 at 11:19pm.

A train moving at a constant speed of 68.0 km/h moves east for 36.0 min, then in a direction 48.0° east of due north for 30.0 min, and then west for 45.0 min. What is the average velocity of the train during this run?

  • Physics - , Thursday, February 4, 2010 at 12:10am

    Find its end position.

    End position=68*36/60 E + 68*1/2*(Cos48 N + sin48E)- 68*45/60 E

    Average veocity= endposition-start position/ timetotal and the start position is zero.

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