Wednesday

July 23, 2014

July 23, 2014

Posted by **Adam** on Saturday, April 26, 2008 at 6:16pm.

s=t^3–4t^2–7t t>=0

where s is measured in meters and t in seconds. When does the particle reach a velocity of 10 m/s?

- calc help -
**bobpursley**, Saturday, April 26, 2008 at 6:19pmTake the derivative:

v=3t^2 -8t -7

put v=10 and rearrange it to have a quadratic in standard format, solve the quadratic with the quadratic formula.

- calc help -
**Adam**, Saturday, April 26, 2008 at 6:26pmi got 1.39 and -4.06 but i still got it wrong

- calc help -

**Related Questions**

Calculus - The position in meters of a particle is given by f(t)= 14t-3t^2, ...

calculus - a particle moves along a number line measured in cm so that its ...

Calculus - A particle moves along a horizontal line so that at any time t its ...

Calculus - The position of a particle moving on a horizontal line is given by s(...

Calculus please help - I have 3 calc problems that i have not been able to do ...

Calculus- To Reiney - I have 3 calc problems that i have not been able to do ...

Calculus - The displacement (in meters) of a particle moving in a straight line ...

Calculus (Derivatives) - Two particles are moving in straight lines. The ...

Calculus - The position of a function of a moving particle is s(t)=5+4t-t^2 for ...

physics - The position of a particle moving along an x axis is given by x = 15t2...