9-11

StIt... Ambiance Apparel T TIC TOC Wholesale h Hulu | Watch WBH Wholesa 9. [-/2 Points] DETAILS SCALC8 2.7.502.XP. If a ball is given a push so that it has an initial velocity of 4 m/s down atcertain inclined plane, then the distance it has rolled after t seconds is given by the following equation. s(t) = 4t + 212 (a) Find the velocity after 2 seconds. m/s (b) How long does it take for the velocity to reach 40.m/s? (Round your answer to two decimal places.) 10. [-/2 Points] DETAILS SCALC8 2.9.507.XP. (a) Find the differential dy. y = cos(x) dy = (b) Evaluate dy for the given values of x and dx. (Round your answer to three decimal places.) x = x/3, dx = 0.01. dy = 11. [-/1 Points] DETAILS SCALC8 3.1.511.XP. Find the critical points of the function. (Enter your answers as a comma-separated list.) g(x) = V 100 - x2 X =