Question

4. 1 6 points ] Srails mxve using the co ordibt travel over tuas becon dista fot using the co ordinated expansion and contraction of a single imuneular foot. Although tley aunve alowls,thrv ancesi over it they move slowly, they are persistent and can cover significant tizme. Because they are able to travel over a variety of muscular movement, stiudying how snails move has become s (artificial litmbes) rescarch. Several of these stadies nood to deperiding on how long it takes them to cover a known distance truck. Usually a quick initial experiment is to time the motion 's own pulse rate as a clock. Suppose the person performing the terrain terrain with the same basic muscular moven period of ti ime Beralp. important for prost hetics (artificial limles) t first classify the suails depeading on bow loug it. ta along a pre-determined truck Usually a qu using the experimenter's own pulse rate as a experiment has a pulse rate of 80 beats (a) One particular suail covwers a distunce of 30 cm in 120 pialse beats. What is the per minute. Please answer the following magnitude of the average velocity of this snail? You must express your answer in units of centimeters per second, em/s (b) You get a little excited while doing the experiment, and your pulse rate increases You do not realize this and continue to use a pulse rate elock of 80 beats per minute. This of course introduces an error in your experiment. Will you mistakenly conclude that the snails are moving faster than or slower than they actually are? If your conclusions remain unaffected, say so explicitly. Please explain your reasonine

please answer this question and show all your work for part A and B for full credit. thanks!

Answer 1

Time is 120 beats which is [120 beats / (80 beats / min) ] = 1.5 minutes = 90 second.

Average velocity of snail is

V = d / t = 30cm /90s

V = 0.33m/s

b)

When pulse rate increases the time calculation decreses. With decrease in time then velocity increases (would be greater than 0.33 m/s) as average velocity is depedent on time. So it assumes snail moved faster than 0.33m/s in the second case.