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Phy 201
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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.
answer/question/discussion: ->->->->->->->->->->->-> :
v0 = 10 cm/s
vf = 20 cm/s
`ds = 10 cm/s
@& This would be `dv, not `ds.*@
`dt = 22.5 seconds
@& This isn't correct, and you don't say how it was obtained.*@
A = 5 cm/s
We can directly determine vAve by taking the change in velocity (20 cm/s - 10 cm/s) and dividing by 2, which gives us 5 cm/s.
@& vAve is not change in vel / 2. That would be the average of initial and final velocities.*@
We can directly determine the change in velocity by subtracting 20 cm/s - 10 cm/s.
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