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May 16th, 2017, 07:17 AM  #1 
Newbie Joined: May 2017 From: uk Posts: 5 Thanks: 0  Find acceleration ... velocity is t sin 3t ms^1
Hi new here. stuck on this one: Find the acceleration of a particle at time "t" seconds given that the velocity is t sin 3t ms^1.

May 16th, 2017, 08:14 AM  #2 
Math Team Joined: Jul 2011 From: Texas Posts: 2,640 Thanks: 1319  
May 16th, 2017, 09:45 AM  #3 
Newbie Joined: May 2017 From: uk Posts: 5 Thanks: 0  calculus acceleration
Thank you for the help; much appreciated. One more question..... A particle starting from rest moves with velocity v ms^1 where v=3t(t4) find the range of values of t for which acceleration is positive. 3t4*t is this the start? Last edited by skipjack; May 17th, 2017 at 06:24 AM. 
May 16th, 2017, 10:29 AM  #4  
Math Team Joined: Jul 2011 From: Texas Posts: 2,640 Thanks: 1319  Quote:
$v = 3t(t4) = 3t^2  12t$ $a = 6t  12 > 0$ solve the inequality for $t$ ... Last edited by skipjack; May 17th, 2017 at 06:24 AM.  
May 16th, 2017, 10:39 AM  #5 
Newbie Joined: May 2017 From: uk Posts: 5 Thanks: 0 
Thank you so much for the help; my calculus is very poor and needs much work. Really appreciate your taking the time to help.
Last edited by skipjack; May 17th, 2017 at 06:18 AM. 

Tags 
acceleration, find, ms1, sin, velocity 
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