PHY 231
Your 'cq_1_05.1' report has been received. Scroll down through the document to see any comments I might have inserted, and my final comment at the end.
** **
The problem:
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?
answer/question/discussion: ->->->->->->->->->->->-> :
a_avg = 8cm/sec^2
'dv = a_avg*'dt = 3sec*8cm/sec^2 = 24cm/sec
v_f = v_i + 'dv = 12cm/sec + 24cm/sec = 36cm/sec
#$&*
Assuming that acceleration is constant, what will be its average velocity during
this interval?
answer/question/discussion: ->->->->->->->->->->->-> :
v_avg = (v_i + v_f)0.5 = (12cm/sec + 36cm/sec)0.5 = 24cm/sec
#$&*
How far will it travel during this interval?
answer/question/discussion: ->->->->->->->->->->->-> :
'ds = v_avg*'dt = 3sec*24cm/sec = 72cm
#$&*
** **
4 minutes
** **
&#Very good responses. Let me know if you have questions. &#