A helicopter accelerates at a rate of 7 m/s2 for 5 seconds. Calculate its velocity if it's final velocity is 60 m/s.

25 m/s

Explanation:

Use formula acceleration = velocity final - velocity initial divided by time

A = 7 m/s^2

Vf = 60 m/s

Vi =

t = 5 sec

7 = 60 - x/5

Multiply both sides by 5

35 = 60 - x

Subtract 60 from both sides

-25 = -x

x = 25

Vi = 25 m/s

  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.