4-4 our galaxy is about 105 light-years across, and the most energetic particles known have an energy of about 1019 ev. how long would it take a proton with this energy to traverse the galaxy as measured in the rest frame of (a) the galaxy? (b) the particle?

newton's first law of motion

f=ma newton's second law 7x8=56n

  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.