Wednesday

July 23, 2014

July 23, 2014

Posted by **Joe** on Thursday, November 15, 2012 at 12:00am.

A. Find the velocity of the particle at any time t greater than or equal to 0.

B. For what values of t is the velocity of the particle less than zero.

C. Find the value t when the particle is moving and the acceleration is 0.

- math -
**Steve**, Thursday, November 15, 2012 at 12:13amv(t) = dx/dt = (t-1)^2 (8t-11)

v<0 when 8t-11<0

a(t) = 3/8 ((8t-9)^2 - 1), so a=0 when

(8t-9)^2 = 1

8t-9 = ±1

8t = 8 or 10

t = 1 or 5/4

but at t=1, v=0, so t=5/4 is the answer.

**Related Questions**

Calculus (Answer Check) - Are my answers right? If they are wrong you dont have ...

Calculus (Answer Check) - A particle moves along the x-axis so that its velocity...

Calculus (Answer Check) - A particle moves along the x-axis so that its ...

Calc - A particle moves along the x-axis in such a way that it's position in ...

Calc - A particle moves along the x-axis in such a way that it's position in ...

Calculus - a particle starts at time t = 0 and moves along the x axis so that ...

12th grade - A particle starts at x=0 and moves along the x-axis with velocity v...

Ap calc - A particle moves on the x axis so that it's position at any time t is ...

Calculus - An ant moves along the x-axis with velocity given by v(t)=tsin(t^2), ...

help math - a partial moves along the x-axis so that its velocity at time t, for...