Based on your Birth of Stars Khan Academy assignment answer the following questions about stars: a) A huge cloud of what gas is squeezed together by gravity to ignite by fusion to form Helium and release the energy of a star. b) Which planet in our solar system is the biggest example of a huge collection of gas that does not meet the temperature and pressure threshold to fuse and ignite into a star?

graph question answered .. you think better when you are relaxed and happy

a. are

  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.