the velocity-time graph

Diagram shows the velocity-time graph for a car travelling along a straight road.
Rajah menunjukkan graf halaju-masa bagi sebuah kereta yang bergerak sepanjang jalanraya yang lurus.


Diagram


(a) What is the meaning of velocity?
      Apakah yang dimaksudkan dengan halaju?
  
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(b) Based on the graph in Diagram,
      Berdasarkan graf dalam rajah,
    (i) State a physical quantity represent by gradient of the graph.
        Nyatakan kuantiti fizik yang diwakili oleh kecerunan graf?

      .............................................................................................
    (ii) Name the type of motion of the car during first 4s.
        Namakan jenis gerakn kereta itu dalam masa 4s pertama.

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(c) In the space below, sketch an acceleration-time graph for the car during the first 4 s.
     Dalam ruang di bawah, lakarkan graf pecutan-masa bagi kereta itu dalam 4 s pertama.





 Answers:
Jawapan:
(a) the rate of change of displacement
Kadar Perubahan Sesaran
(b) (i) Acceleration
   Pecutan
(ii) Velocity increases
     Halaju meningkat 
(c)