course phy121
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/s
`dt = 3sec
vF = 50cm/s
A ball travels 30 cm along an incline, starting from rest, while accelerating at 20 cm/s^2.
`ds = 30cm
v0 = rest (0)
a = 20cm/s/s
Then for each situation answer the following:
Is it possible from this information to directly determine vAve?
in the first one it is, the second two you cannot directly determine it.
Is it possible to directly determine `dv?
only in the first situtation.
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