A truck accelerates uniformly from rest to 22.5 m/s in 6.1 s along a level stretch of road. Determine the average power (in W) required to accelerate the truck for the following values of the weight (ignore friction). (a) 1.00 x 104 N 84.69e3 Can you write an expression for the average power in terms of the work done on the truck and the time over which this work occurs? How does the work done on the truck compare to its change in kinetic energy? Can you write an expression for the change in kinetic energy for the truck in terms of its final and initial speed? Don't forget, you have been given the weight of the truck, not the mass. W (b) 1.35 x 104 N 114.33e3 Since only the weight of the truck has changed, how do the statements made in (a) above apply to this case? W