Under the watchful eye of a behavioral biologist, a snail crawls along a meterstick with a rip-roaring speed of 5.0 cm/min. The snail is moving towards the larger numbers. When the snail is at the 2.0cm mark, the biologist’s stopwatch reads 70s. What will be the reading on the biologist’s stopwatch (in seconds) when the snail is at the 35cm mark?

  distance on the y-axis and time on the x-axis.

explanation:

the instantaneous velocity = change in position/time taken

the slope of the graph should give instantaneous velocity.

  slope of a graph = change in value of y -axis / change in values of x -axis

  comparing both the equations

    change in value of y -axis = change in position

  change in values of x -axis = time taken

so position values should be on the y axis and time values should be on the x axis.

distance on the y-axis and time on the x-axis.

snell's law

refractve index = sin incidence / sin refraction