1. The problem statement, all variables and given/known data A 56 g tennis ball is accelerated at 1000 m s-2 to reach its service velocity. Calculate the average resultant force required to accelerate the ball. 2. Relevant equations F = MA 3. The attempt at a solution Mass = 0.56g = 0.056kg Acceleration = 1000m/s2 0.056 x 1000 = 56N. Is this correct? I know this is how to calculate the resultant force but it asks for the average? Does that change anything.