A rolling ball moves from x1 = 8.5cm to x2 = -4.2cm during the time from...

Question

Question

A rolling ball moves from x1 = 8.5cm to x2 = -4.2cm during the time from t1 = 3.0s to t2 = 6.7s

What is its average velocity over this time interval?

science physics

Answer 1

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Answer #1

average velocity is defined as the total displacement
travelled during a time interval

V_avg = total displacement / time interval

V_avg = (x2-x1)/(t2-t1)

x1 , x2 are the positions of the particle at times t1 & t2
V_avg = (-4.2-8.5)/(6.7-3)

V_avg = -3.42 cm/s

Answer 2

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