course phy 201
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An object travels a distance of 32 cm in 17.6 seconds from start to finish. If its acceleration is uniform and its initial velocity zero, then what are its average velocity, acceleration and final velocity?So in this problem the distance travels was 32 cm and the time interval was 17.6 second. The initial velocity is zero which means that it started from rest we can now fin the average velocity, acceleration, and final vel
To find the average velocity you would take the distance traveled and divide it by the time interval. 32cm/17.6sec = 1.82cm/sec.
You can now find the final velocity. Because the average velocity is in the middle you just multiply the average velocity by two and get the final velocity. 1.82cm/sec * 2 = 3.64cm/sec.
To find the acceleration you first have to have to know the change in velocity. The change in velocity is 3.64cm/sec because you started from rest which means you had no velocity at the beginning.
To find the acceleration you then take the change in velocity and divide it by the time interval. The change in velocity is 3.64cm/sec and then you divide it by 17.6sec.. 3.64cm/s / 17.6 s = 0.207cm/sec^2
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Good solution, good explanation. Let me know if you have questions.