Question

7. Given below as figure is the distance-time graph of the motion an object
109
Distance (m)
2
0
4.
20
8 12 16
Time (second)
(1) What will be the position of the object at 20 s?
(ii) What will be the distance travelled by the object in 125? 6
(iii) What is the average speed of the object?
INCERT Exemplar] 3
2.0​

Answer 1

could you please attach a picture of the graph

Answer 2

Step-by-step explanation:

So to find the position of the object at time 20 second, we draw a line parallel to y-axis from time 20 and take the point where it intersects then again draw a line parallel to the x-axis, we get the distance where it intersects the y-axis.

Here the position is 8 meters from starting.

ii) Distance travel in 12 seconds by the object is 6 meters.

iii) Since average speed of object is define as total distance covered by object by total time take. So here total distance is 8 m and the total time is 20 second,

Average speed =

= 0.4 m/s

solution