The distance covered by a car at a time, t is given by x = 20t + 6t4, calculate (i) the instantaneous velocity when t = 1

(ii) the instantaneous acceleration when t =1

(i) v = 44 m/s

(ii) a = 72 m/s^2

Explanation:

You have the following equation for the potion of a car:

(i) The instantaneous velocity is the derivative of x in time:

for t = 1 is:

(ii) The instantaneous acceleration is the derivative of the velocity:

for t = 1

falling water hydro = water .. spectcular places these plants 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.