9. [1/5 Points] DETAILS MY NOTES SCALC9 1.4.008. PREVIOUS ANSWERS ASK YOUR TEACHER PRACTICE ANOTHER A graphing calculator is recommended. The displacement (in centimeters) of a particle s moving back and forth along a straight line is given by the equation s = 2 sin(at) + 2 cos(t), where t is measured in seconds. (Round your answers to two decimal places.) (a) Find the average velocity during each time period. (i) [1, 2] 4 cm/s (ii) [1, 1.1] 26.9 (iii) [1, 1.01] 2 (iv) [1, 1.001] 1 X cm/s X cm/s x cm/s (b) Estimate the instantaneous velocity of the particle when t = 1. -2 x cm/s Enhanced Feedback Please try again. When calculating the average velocity, you are actually calculating the slope of the secant line between the two given points. Use the displacement formula for each given time to calculate the difference in height for the given time period, and divide by the change in time. 7:09 PM