A rocket carrying a satelite is accelerating straight up from the earth's surface. The rocket clears the top of its launch platform, 47 m above the ground, 1.35 seconds after lift off. After an additional 4.45 seconds it is 1.00 km above the ground. Calculate the magnitude of the average velocity of the rocket for (a) the 4.45 second part of the flight; (b) the first 5.80 second part of the flight.(adsbygoogle = window.adsbygoogle || []).push({});

So do I use [itex] \overline v_{x} = \frac{1}{2}(v_{x}_{0} + v_{x})t [/itex] or [itex] v_{x} = \frac{1}{2}(0 + \frac{47}{1.35})(1.35)[/itex] and do the same for the second part, except with different time and final speed?

Thanks

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# Homework Help: Average Velocity

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