phy 201 For each situation state which of the five quantities v0, vf, `ds, `dt and a are given, and give the value of each. • A ball accelerates uniformly from 10 cm/s to 20 cm/s while traveling 45 cm. answer/question/discussion: 10cm/s= v0 20cm/s=vf 45cm=`ds • A ball accelerates uniformly at 10 cm/s^2 for 3 seconds, and at the end of this interval is moving at 50 cm/s. answer/question/discussion: 10cm/s^2=a 3s=`dt 50cm/s=vf • A ball travels 30 cm along an incline, starting from rest, while accelerating at 20 cm/s^2. answer/question/discussion: 30cm=`ds 20cm/s^2=a Then for each situation answer the following: • Is it possible from this information to directly determine vAve? answer/question/discussion: situation 1: yes, you would add v0 and vf, then divide by 2. Sit.2: it would be possible, but not directly. You would have to find `dv by multiplying a and `dt, then take that value and find v0. Then you could take the average of v0 and vf to get vAve. Sit. 3: no, it would not be possible without the `dt value. • Is it possible to directly determine `dv? answer/question/discussion: sit. 1: yes, you would subtract v0 from vf to get `dv. Sit. 2: yes, you would e able to find `dv by multiplying `dt with a. Sit. 3: no, you would not be able to because the `dt value is not given.