A car initially traveling eastward turns north by traveling in a circular path at uniform speed as in the figure. The length of the arc ABC is 270 m, and the car completes the turn in 31.0 s.
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The length of the arc is for a 90 degree or (π/2) radians is l = rθ l = 270*(π/2) l = 424.1 m so the constant speed is v = l/t v = 424.1 / 31 v = 13.68 m/s acceleration at a uniform speed on a circular curve is a = v²/r a = 13.68² / 270 a = 0.693 m/s² and the direction will be towards the center of the curve which will be perpendicular to the instantaneous velocity. 35° + 90° = 125°
ok so this is the graph
yes because the answer is not correct
all of them?
ok hold up I'll get back to you ASAP
(a) tangential speed is v = s / t = 270m / 31s = 8.71 m/s (b) radius is r = s / θ = 270m / pi/2 = 172m a = v^/r = 8.71^2 / 172 = 0.441 m/s^2 at angle 180-35 deg = 145deg CCW from x-axis (towards the origin)
let me know if this is right
b is not but a is correct and where is c
b) 0.441 m/s^2, 45
is this what you wrote?
yes and it is correct but where the direction c
no is not the correct answer
is that +, - direction for you to choose or?
yes there is
which one i should choose - or +
try 145 degree - direction
last try so please try to be correct
both the degree and the direction are incorrect?
in same box so if any one is not correct the other will be the some
try 55 + direction
Your response differs significantly from the correct answer. Rework your solution from the beginning and check each step carefully.° counterclockwise from the +x-axis that what i get when i put the answer
you are not supposed to put +/- in front of the number, just put 55
if it's still not right let me know
did you try to put 145 before? just 145
ok the web is not open any more time over thanks a lot for trying to help me I appreciate that
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