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A ball accelerates at 8 cm/s^2 for 3 seconds, starting with velocity 12 cm/s.
What will be its velocity after the 3 seconds has elapsed?
Vf=Vo +at
Vf=12+8(3)
Vf=36 cm/sec
Assuming that acceleration is constant, what will be its average velocity during this interval?
Vave=(Vo+Vf)/2=(12+36)/2=24cm/sec
How far will it travel during this interval?
'ds=(Vo+Vf)/2'dt
=(12+36)/2(3)
'ds=8 cm
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5 min
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&#Very good work. Let me know if you have questions. &#