10. [-/1 Points] DETAILS SCALCET9 3.3.042. MY NOTES PRACTICE ANOTHER A graphing calculator is recommended. An elastic band is hung on a hook and a mass is hung on the lower end of the band. When the mass is pulled downward and then released, it vibrates vertically. The equation of motion is s(t) = 7 cos(t) + 3 sin(t), t 2 0, where s is measured in centimeters and t in seconds. (Take the positive direction to be downward.) (a) Find the velocity and acceleration at time t. v (t ) = a(t) = (b) Graph the velocity and acceleration functions. O O to 2 71 K KIN 2 x TKIN N