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12-29. A particle moves along a straight line with an
Chapter 12, Problem 12-30(choose chapter or problem)
As a train accelerates uniformly it passes successive kilometer marks while traveling at velocities of 2 m/s and then 10 m/s. Determine the train’s velocity when it passes the next kilometer mark and the time it takes to travel the 2-km distance.
Questions & Answers
QUESTION:
As a train accelerates uniformly it passes successive kilometer marks while traveling at velocities of 2 m/s and then 10 m/s. Determine the train’s velocity when it passes the next kilometer mark and the time it takes to travel the 2-km distance.
ANSWER:Step 1 of 3
For constant acceleration, we can utilise the three following equations:
Where is the final velocity, is the initial velocity, is the constant acceleration, is the time, and are the initial and final displacement of a particle, respectively. Where $$s$$ denotes the total distance travelled.