a particle moves along the x axis according to the equation x=50t +9t^2 (where t is in seconds and x is in meters) 1. calculate the average velocity...

a particle moves along the x axis according to the equation x=50t +9t^2 (where t is in seconds and x is in meters) 1. calculate the average velocity of the particle during the first 3.0 s of its motion.2. calculate the instantaneous velocity of the particle at t= 3.0s 3. Calculate the instantaneous acceleration of the particle at t= 3.0s