Some plants disperse their seeds when the fruit splits and contracts, propelling the seeds through the air. the trajectory of these seeds can be determined with a high-speed camera. in an experiment on one type of plant, seeds are projected at 20 cm above ground level with initial speeds between 2.3 m/s and 4.6 m/s. the launch angle is measured from the horizontal, with +90∘ corresponding to an initial velocity straight up and −90∘ straight down. the experiment is designed so that the seeds move no more than 0.20 mm between photographic frames. what minimum frame rate for the high-speed camera is needed to achieve this? (a) 250 frames/s; (b) 2500 frames/s; (c) 25,000 frames/s; (d) 250,000 frames/s.