Question

Figure shows the graph of the distance with time a car travels as measured from the starting point.
(a) Describe Motion.
(b) calculate the average speed
(C) for the first 10 sec.,
(d) for the last 4 sec.
Calculate the average speed for the whole journey
where is the car between the interval 4s to 10s ?
where is the car at the end of 14 seconds?​

Answer 1

Explanation:

[1] Uniform motion, then at rest and retardation.

[2] (i) Average speed = total distance travelled / total time taken

20/14 = 10/7 ms-1

(ii) 20/4 = 5 ms-1

[3] 20/4+10+14 = 20/28

= 5/7 ms-1

[4] At rest

[5] On the time axis by doing retardation.