The equation below gives the position s = f(t) of a body moving on a coordinate line (s in meters, t in seconds). Find the body's velocity, speed, acceleration, and jerk at time t = - sec. s =7 - 5 cos t The velocity of the body at t= - sec is m / sec. The speed of the body att = - sec is m / sec. The acceleration of the body att = - sec is m/ sec2. The jerk of the body att= - sec is m / sec3