Figure shows the graph of the distance with time a car travels as meas

1.	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 journeywhere is the car between the interval 4s to 10s ?where is the car at the end of 14 seconds?
Answer» 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.

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 journeywhere is the car between the interval 4s to 10s ?where is the car at the end of 14 seconds?

Answer»

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.

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