Hi, I've got a lab requiring me to figure my sustainable and maximum power.(adsbygoogle = window.adsbygoogle || []).push({});

To start with, I'm running distances of 100m, 200m, 300m, and 400m. These runs are then timed, and used to calculate my sustainble power.

So, now, I've got my times (in seconds). Now, I need to find out my sustainable power. To calculate power, I need to use this formula:

->power = work/time

which is really ->power = force x distance/time

and then, i can turn force into ->power = mass x acceleration x distance/time

ok, so now, i think my formula is ready. (correct me if im wrong)

Now, say my mass is55kgand the time it took me to run the100mdistance is14.3 seconds.

I would subsitute these values in, and get this.:

power = 55kg x acceleration x 100m/14.3 seconds

So far, I'm pretty sure that this is also correct, again, correct me if I'm wrong

Now, I need to find out acceleration, it be should it be 9.8/s^2? Because I think it's only used for a falling object, but in this case, I'm running, and not falling. So this is where I'm sorta stuck, is 9.8 the acceleration? or do I have to use an alternative formula to calculate it.

My teacher says that once I have done my graph for all four values (100m, 200m, 300m, 400m), the graph should be a curved line, can anyone confirm this?

Many thanks for the help and advice that will come,

Anthony

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# Homework Help: A question regarding acceleration

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