Question

For the motion graphed in the position versus time graph shown above, what is the average velocity in the time interval 1 to 3 seconds?

What is the average velocity in the time interval 3 to 4 seconds?

What is the average velocity in the time interval 5 to 6 seconds?

Answer 1

20m/s

0

26.7m/s

Step-by-step explanation:

in this graph, remember that slope of the line is the velocity

to calculate

when t=1-3s

slope=[60-20]/[3-1]

=40/2

=20

so velocity equal it

so v=20ms-¹

t=3-4

you can see the position hadn't changed during t=3-4 so no need calculation . if there's no change in position them velocity must be 0

t=5-6

v=-40 /1.5

v=-26.7ms-¹

because it's a straight line so the slope is same in every point

so i can include 4.5-6 in the calculation so there's 1.5 [6-4.5]