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October 23, 2014

October 23, 2014

Posted by **Anonymous** on Friday, February 4, 2011 at 7:53pm.

(a) Calculate the average velocity of the car for the time interval t = 0 to t = 8.0 s.

m/s

(b) Calculate the instantaneous velocity of the car at the following times:

i) t = 0

m/s

ii) t = 4.0 s

m/s

iii) t = 8.0 s

m/s

(c) How long after starting from rest is the car again at rest

- Physics -
**bobpursley**, Friday, February 4, 2011 at 7:57pma) average velocity= (x(8)-x(0))/8

b) v(t)=x'(t)=2bt-3ct^2

Put t=0;4;8 and calculate. I assume you know calculus to get v(t)=x'(t)

- Physics -
**drwls**, Friday, February 4, 2011 at 8:00pmYou can do this yourself.

Please use ^ before exponents.

For average velocity, compute

x at 0 and 8 s and divide by the elapsed time, 8s

For instantaneous velocity, take the derivative dx/dt at each of the times listed.

- Physics -
**Anonymous**, Saturday, February 19, 2011 at 12:25pma pendulum has a period on the earth of 1.35s.what is its period on the surface of the moon where g=1.62m/s^2

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