#$&*
PHY 201
Your 'cq_1_05.1' report has been received. Scroll down through the document to see any comments I might have inserted, and my final comment at the end.
** CQ_1_05.1_labelMessages **
The problem:
A ball accelerates at 8 cm/s^2 for 3 seconds, starting with velocity 12 cm/s.
• What will be its velocity after the 3 seconds has elapsed?
answer/question/discussion: ->->->->->->->->->->->-> :
aAve = 'dv / 'dt = (vF - v0) / 'dt
vF = aAve * 'dt + v0 = 8 cm/s^2(3 s) + 12 cm/s = 24 cm/s + 12 cm/s = 36 cm/s
After 3 seconds, the final velocity is 36 cm/s.
#$&*
• Assuming that acceleration is constant, what will be its average velocity during this interval?
answer/question/discussion: ->->->->->->->->->->->-> :
vAve = (v0 +vf) / 2 = (12 cm/s + 36 cm/s) / 2 = 24 cm/s
#$&*
• How far will it travel during this interval?
answer/question/discussion: ->->->->->->->->->->->-> :
vAve = 'ds / 'dt
'ds = 'dt * vAve = 3 s * 24 cm/s = 72 cm
#$&*
** **
8 mins
&#Very good responses. Let me know if you have questions. &#