Il Scallops eject water from their shells to provide a thrust force. The graph shows a smoothed graph of actual data for the initial motion of a 25 g scallop speeding up to escape a predator. What is the magnitude of the net force needed to achieve this motion? How does this force compare to the 0.25 N weight of the scallop? FIGURE P4.20 v (m/s) 0.3- 0.2 0.1 0.04 0.0 0.1 0.2 0.3 1 (s)