Phy201
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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.
V0 =10cm/s, Vf 20cm/s, ‘ds=45cm
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.
a=10cm/s^2, ‘dt=3s, Vf=50cm/s
A ball travels 30 cm along an incline, starting from rest, while accelerating at 20 cm/s^2.
‘ds=30cm, V0=0, a=20cm/s^2
Then for each situation answer the following:
Is it possible from this information to directly determine vAve?
No you cannot find it on the third one.
Is it possible to directly determine `dv?
No you cannot find it on the third one.
You can find every quantity for each of these situations, but not necessarily by direct reasoning.
Your answers are correct in that you cannot directly reason out anything in the third situation.
You can directly reason out, in one step and using only the given information, the two quantities in the first situation. However you don't explain how this would be done.
All quantities can be reasoned out in the second situation, some directly from the given quantities, and some using multiple steps. Which ones can be reasoned that directly from the given quantities, and how?
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25min
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You have correctly identified the quantities. Your answers to the subsequent questions are plausible but do not include any explanation.
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