Question

On a rainy day, a car exits the interstate onto a ramp that spirals down to the street with a radius of R= 100 m. The advisory speed limit sign says 55 mph. The coefficients of friction for tires on wet asphalt are static us = 0.5 and kinetic uk= 0.2. Can the car safely exceed the advisory speed? ED R A. Yes, it can go up to 55 mph. B. No, it can only go 22 mph. C. No, it can only go 31 mph. D. No, it can only go 49 mph. E. No, it can only go 14 mph.

Answer 1

louh * when car motion then kinetic seriction Comes into my² R Toys Megm action muz R Mx fg Jux Rg U= 5.2 x 100m & g. 2m pech va 14 mile 14 x 360o 1000 X1.6 hr V. 31.5 mph * No at can only 96 31 mph.