The problem says, \"A bicyclist in the Tour de France crests amountain pass as h
ID: 1680280 • Letter: T
Question
The problem says, "A bicyclist in the Tour de France crests amountain pass as he moves at 18 km/h. At the bottom, 4.0 kmfarther, his speed is 75 km/h. What was his average acceleration(in m/s) while riding down the mountain." I am able to get all the information, except for acceleration.I have that it is (v-v0)/t. They have averageacceleration being (v^2-v0^2) / 2(x-x0). Where did they comeup with this equation? The problem says, "A bicyclist in the Tour de France crests amountain pass as he moves at 18 km/h. At the bottom, 4.0 kmfarther, his speed is 75 km/h. What was his average acceleration(in m/s) while riding down the mountain." I am able to get all the information, except for acceleration.I have that it is (v-v0)/t. They have averageacceleration being (v^2-v0^2) / 2(x-x0). Where did they comeup with this equation?Explanation / Answer
from the problem to determine averageaccleration we use kinematic equation v2 - u2 = 2as where initial velocity u = v0 = 5m/s s = the displacement = x - x0 = 4km = 4000m v2 - v02 = 2a (x-x0) a = v2 - v02/2(x-x0) plug in values a = -----m/s2
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.