a man running on a straight path at 3 meters per second accelerates uniformly to a speed of 5.23 meters per second in 9.65 seconds. What is the total distance traveled? What formula can i use?

Question

anonymous · Answer

$$x _{f}=x _{i}+v _{1}\Delta t+\frac{ 1 }{ 2 }a \Delta t ^{2}$$

anonymous · Answer

whats a?

anonymous · Answer

a would be the acceleration.

anonymous · Answer

what would it be in this case though? like what number?

anonymous · Answer

Actually the first equation you should use is this one $$v _{f}=v _{i}+a \Delta t$$

anonymous · Answer

this will help you compute your acceleration.

anonymous · Answer

ohh so first we solve for acceleration and then plug it into the other formula?

anonymous · Answer

then you could actually just use the formula $$v _{f}^{2}=v _{i}^{2}+2a \Delta x$$ and compute the total distance.

anonymous · Answer

so you actually won't even need the first formula, so you can disregard it.

anonymous · Answer

what did u end up getting for acceleration because i got 4 and then did the problem and got it wrong..

anonymous · Answer

the answer is not 4.

anonymous · Answer

just kidding!

anonymous · Answer

i got it! haha i divided wrong

anonymous · Answer

you should setup the problem and show me how you did it. but the answer came out to be 39.7

anonymous · Answer

ok good job :)

anonymous · Answer

lol yeah i figured it out haha
i have some more questions and i dont know what formulas to use and i have my test tomorrow, would u mind helping me out?

anonymous · Answer

i dont mind reposting it so i could give u the best answer but would u mind helping me?

anonymous · Answer

sure. could you make a new thread for it though? This one is cluttered now.

anonymous · Answer

yes! no problem! gracias

anonymous · Answer

de nada