A bus makes a trip according to the position-time graph shown in the drawing. A)

Question

A bus makes a trip according to the position-time graph shown in the drawing.

A)What is the average velocity (magnitude and direction) of the bus during segment A?
B)What is the average velocity (magnitude and direction) of the bus during segment B?
C)What is the average velocity (magnitude and direction) of the bus during segment C?
D)What is the average velocity (magnitude and direction) of the bus during the whole trip?

A bus makes a trip according to the position-time graph shown in the drawing. A bus makes a trip according to the position-time A) What is the average velocity (magnitude and direction) of the bus during segment A? B) What is the average velocity (magnitude and direction) of the bus during segment B? C) What is the average velocity (magnitude and direction) of the bus during segment C? D) What is the average velocity (magnitude and direction) of the bus during the whole trip?

Explanation / Answer

Average velocity = (x2-x1)/(t2-t1)

For A = (10-30)/(0.5-0) = -20/0.5 = -40 km/hr = 40 km/hr backwards

For B = (40-10)/(2-0.5) = 30/1.5 = 20km/hr forwards

For C = (30-40)/(3-2) = -10/1 = -10 km/hr = 10 km/hr backwards

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