QUESTION 3 A 906 kg car negotiates a 455 m radius curve at 21.8 m/s. Assuming an unbanked curve, find the minimum static coefficient of friction, between the tires and the road, static friction being the reason that keeps the car from slipping. Normal format and 3 SF. W Free-body diagram N W F₁ = Fnet = f f = μ₂N

Convert 180 miles per hour to feet per second. I keep getting 303 (when rounded) but the correct answer is 264 so I am unsure as to where I am messing up my conversions

Practice) a. To convert feet (ft) to meters (m), the number of feet should be multiplied by which of the following conversion factors? i. 1 m/3.28 ft ii. 3.28 ft/1 m b. To convert sq.in to sq.ft, the number of sq.in should be multiplied by which of the following conversion factors? i. 144 sq.in/1 sq.ft ii. 1 sq.ft/144 sq.in c. To convert sq.yd to sq.ft, the number of sq.yd should be multiplied by which of the following conversion factors? i. 1 sq.yd/9 sq.ft ii. 9 sq.ft/1 sq.yd 3. (Practice) Determine the final units of the following expression: 9.8m/s2 ×100cm/1m×1in/2.54cm×1ft/12in 4. (Practice) a. Determine the conversion factors that can be used to convert miles per gallon (mpg = mi/gal) to kilometers per liter (km/liter), given that 1 liter = 0.22 gallons and 1 kilometer = 0.6214 miles. b. Using the conversion factors you determined in Exercise 4a, convert 25 mpg into km/liter. 5. (Automotive) a. An automobile engine’s performance can be determined by monitoring its rotations per…

Use the dimensional analysis to show if the following equations below are dimensionally consistent: a. v = at 2 ( where v is the velocity, a the acceleration and t the time) b. v = PE/d ( where v is the velocity, PE is the potential energy and d is the distance )