- #1
Crusaderking1
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Homework Statement
A car is stopped at a traffic light. It then travels along a straight road so that its distance from the light is given by x(t) = bt^2 - ct^3, where b = 2.40 m/s^2 and c = 0.100 m/s^3.
1. Calculate the average velocity of the car for the time interval t = 0 to t = 10.0 s.
2. Calculate the instantaneous velocity of the car at t=0s.
3. Calculate the instantaneous velocity of the car at t=5.00 s.
4. Calculate the instantaneous velocity of the car at t=10.0 s.
5. How long after starting from rest is the car again at rest?
Homework Equations
x2-1/t2-t1
The Attempt at a Solution
1. I was wondering what the x-values were since I think change in time is just x2-x1/10.0 seconds.
2,3,and 4, do I just plug t into the equation bt^2 - ct^3?
5. No idea.