Aramp is used to load furniture onto a moving truck. the person does 1240 j of work pushing
the furniture up the ramp, and the ramp does 822 j of work. calculate the efficiency of the
ramp.

66.29%

Explanation:

Efficiency = work output / work input x 100 %

Work output = 822J

Work input = 1240 L

E = 822/1240 x 100

E = 0.6629 x 100

E = 66.29%

  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.

a is the best answer your welcome