Diagram 2 shows that the velocity-time graph of the toy car from K to M.
Rajah 1 menunjukkan sebuah kereta mainan meluncur turun landasan dari kedudukan K.
Rajah 2 menunjukkan graf halaju-masa bagi buadk lelaki itu dari K ke M.
Diagram 3 shows the same toy skating down from position L by using another ramp.
Diagram 4 shows the velocity-time graph of the toy car from L to N.
Rajah 3 menunjukkan kereta mainan yang sama meluncur turun dari kedudukan L menggunakan landasan yang lain. Rajah 4 menunjukkan graf halaju-masa kereta mainan itu dari L ke N.
Both ramps are the same slope and surface.
Kedua-dua landasan mempunyai kecerunan dan permukaan yang sama.
(a) Name the physical quantity represented by the gradient of the velocity-time graph.
Namakan kuantiti fizikal yang mewakili kecerunan graf-halaju masa itu.
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(b) Observe Diagram 1 and Diagram 2.
Perhatikan Rajah 1 dan 2.
(i) Compare the gravitiational potential energy of the toy car at K and L.
Bandingkan tenaga keupayaan graviti kereta mainan itu pada K dan L.
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(ii) Compare the velocity of the toy car at M in these two situations.
Bandingkan halaju kereta mainan itu pada kedua-dua situasi ini.
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(ii) Compare the kinetic energy of the car at M in these two situations.
Bandingkan tenaga kinetik kereta mainan pada kedua-dua situasi ini.
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(c) Based on the answers in 6(b),
(i) State the relationship between the gravitational potential energy and the kinetic energy of the toy car.
Nyatakan hubungan antara beza keupayaan graviti dengan tenaga kinetik bagi kereta mainan itu.
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(ii) State the physics concept involved.
Nyatakan konsep fizik yang terlibat.
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(d) (i) Based on diagram 1, what happens to the velocity of the car when it slides from M to N?
Berdasarkan Rajah 1, apakah yang berlaku kepada halaju kereta mainan itu apabila ia meluncur dari M ke N?
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(ii) Give one reason for the answer in 6(d)i.
Berikan satu sebab bagi jawapan di 6(d)i.
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