NEED HELP ASAP!! Balls 1,2, and 3 are at rest. Ball four collides with them, and now all four balls are moving. Which statement is true? A. Three of the balls have gained momentum, and the momentum of the fourth ball has not changed. B. Three of the balls have lost momentum, and the momentum of the fourth ball has not changed. C. Three of the balls have gained momentum, and the fourth ball has lost momentum. D. Three of the balls have lost momentum, and the fourth ball has gained momentum

i guess it’s a and b

the part of the wave he is travelling on is the crest

your answer is c! hope this : )

  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.