Question

A ball rolls up a slope. At the end of three seconds its velocity is 20 cm/s; at the end of eight seconds its velocity is 0. What is the average acceleration from the third to the eighth second? A. 2.5 cm/s^2 B. 4.0 cm/s^2 C. 5.0 cm/s^2 D. 6.0 cm/s^2 E. 6.67 cm/s^2

Answer 1

Answer:

1. A ball rolls up a slope. At the end of three seconds its velocity is 20 cm/s; at the end of eight seconds its velocity is 0. What is the average acceleration from the third to the eighth second? A) 2.5 cm/s B) 4.0 cm/s C) 5.0 cm/s D) 6.0 cm/s2 E) 6.67 cm/s2