Homework Help: calc help

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

the position function of a particle is given by
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 6:19pm
Take 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 6:26pm
  i got 1.39 and -4.06 but i still got it wrong

Answer this Question

Related Questions

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 - a particle moves along a number line measured in cm so that its ...
Calculus (Derivatives) - Two particles are moving in straight lines. The ...
Calculus - A particle moves along a horizontal line so that at any time t its ...
science - the velocity of a particle is given by v=[16t^2i+4t^3j +(5t+2)k]m/s, ...
Calculus - The position in meters of a particle is given by f(t)= 14t-3t^2, ...
Calculus - The position of a particle moving on a horizontal line is given by s(...
calculus - the displacement (in meter) of a particle moving in a straight line ...
Calculus - The position of a particle, s metres from the starting point, after t...

For Further Reading

First Name:
School Subject:
Answer: