Posted by Melinda on Thursday, January 19, 2012 at 1:51am.
Would someone like to help me with these questions?
Steps appreciated~
1. If the diameter of a monster truck tire is 3.5 m and it makes one rotation every 5 seconds, how far does the tire
roll in 1 minute?

2. At t=0 a car is due 2 km north of you heading west moving 13 km/s after 1.5s. What is the angle in radians between you and the car from where the car was at t=0?
a) 2.306 rads
b) 0.9475 rads
c) 2.936 rads
d) 1.468 rads


Math  kkgothgirlkk, Thursday, January 19, 2012 at 2:01am
1) 23, sorry i don't know the other one :(

Math  drwls, Thursday, January 19, 2012 at 6:54am
Please ignore all answers and posts of kkgothgirlkk.
1. pi*D*(60/5 revolutions) = 131.9 meters
2. Check your problem statement again. No car can travel 13 km/s. That is more like the velocity of a launched rocket. If you meant 13 m/s, the car would only move 19.5 m in 1.5 s, and the angular displacement would be smaller than any of your choices.
My guess is that you copied both the speed and time dimensions wrong.

Math  Melinda, Thursday, January 19, 2012 at 9:50am
Thanks Drwls!
For 1, I got the same answer however, the book says 263.89 m

Math  kkh8r_n_luvin_it, Friday, January 20, 2012 at 4:12pm
okay , i must say i thought it said how many times does it turn. if it was what i thought it was then my answer would have been correct. it was not therefore it was wrong. i take responsibility. IT WAS JUST A FRIGGIN MISTAKE !!!!!!!!!!!!!!
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