A small object is placed at the top of an incline that is essentially frictionless. The object slides down the incline onto a rough horizontal surface, where it stops in 6.7 s after traveling 48 m. (a) What is the speed of the object at the bottom of the incline and its acceleration along the horizontal surface?
(b) What is the height of the incline?

  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.

option number c is the right answer.

total distance/total time

(85 + 82)/(5+3)

167/8

20 just over

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