Consider a ball whose velocity is as follows 17-cm/s at t 0s 15-cm/s at t-1.s, 1

Question

Consider a ball whose velocity is as follows 17-cm/s at t 0s 15-cm/s at t-1.s, 13 cm/s at t 2.s, 11-cm/s at t=34, and 9-cm/s at t4.s. (a) Which of the following statements describes the velocity and acceleration of the ball? Choose one answer only. O increasing velocity, increasing acceleration O increasing velocity, constant acceleration O increasing velocity, decreasing acceleration decreasing velocity, increasing acceleration O decreasing velocity, constant acceleration O decreasing velocity, decreasing acceleration (b) Examine the figures below. In order to move as described in the previous part, the ball could (choose one answer only) roll UP the LEFT hill. roll DOWN the LEFT hill. O roll UP the CENTER hill. roll DOWN the CENTER hill, roll UP the RIGHT hill. roll DOWN the RIGHT hill.

Explanation / Answer

a) decreasing velocity constant acceleration  

b) roll UP the left hill


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