Posted by Melinda on .
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,
1) 23, sorry i don't know the other one :(

Math 
drwls,
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,
Thanks Drwls!
For 1, I got the same answer however, the book says 263.89 m 
Math 
kkh8r_n_luvin_it,
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 !!!!!!!!!!!!!!