10 Rajah 4 menunjukkan graf jarak-masa bagi perjalanan sebuah Releta yang sebuah bas dari bandar M ke bandar N. Graf OPOR mewakili gerakan kereta Encik Kassim dan graf OA mewakili gerakan bas itu. Diagram 4 shows the distance-time graph for the journey of a car driven by Encik Kassim and a bus from town M to town N. The graph OPQR represents the motion of Encik Kassim's car and the graph OA represents the motion of the bus. Encik Kassim membawa kereta selama 1 jam dan dia bersinggah di sebuah restoran untuk makan tengah hari selama sejam manakala bas tersebut bergerak dengan kelajuan yang seragam sepanjang perjalanannya. Kedua-dua kenderaan itu bertolak dari bandar M pada waktu yang sama. Encik Kassim drove the car for an hour and he stopped at a restaurant for lunch which lasted for an hour while the bus was moving at a uniform speed throughout the whole journey. Both vehicles departed from town M at the same time. Jarak (km) Distance (km) 220- k Masa (j) Time (h) (a) Hitung-nilai1. Calculate the value of t. Rajah 4/Diagram 4 (b) Hitung laju-purata, dalam km j-, bas itu bagi keseluruhan-perjalanan. Calculate the average speed, in km h-', of the bus for the whole journey. (c) Hitung-nilai k, jika-bas-itu-memotong-kereta-Eneik-Kassim setelah bergerak t Ham 40 minit đan bandar-M. Calculate the value of k, if the bus overtook Encik Kassim's car after travelling 1 hour 40 minules from town M. Jawapan/Answer: (a) (b) (c)
10 Rajah 4 menunjukkan graf jarak-masa bagi perjalanan sebuah Releta yang sebuah bas dari bandar M ke bandar N. Graf OPOR mewakili gerakan kereta Encik Kassim dan graf OA mewakili gerakan bas itu. Diagram 4 shows the distance-time graph for the journey of a car driven by Encik Kassim and a bus from town M to town N. The graph OPQR represents the motion of Encik Kassim's car and the graph OA represents the motion of the bus. Encik Kassim membawa kereta selama 1 jam dan dia bersinggah di sebuah restoran untuk makan tengah hari selama sejam manakala bas tersebut bergerak dengan kelajuan yang seragam sepanjang perjalanannya. Kedua-dua kenderaan itu bertolak dari bandar M pada waktu yang sama. Encik Kassim drove the car for an hour and he stopped at a restaurant for lunch which lasted for an hour while the bus was moving at a uniform speed throughout the whole journey. Both vehicles departed from town M at the same time. Jarak (km) Distance (km) 220- k Masa (j) Time (h) (a) Hitung-nilai1. Calculate the value of t. Rajah 4/Diagram 4 (b) Hitung laju-purata, dalam km j-, bas itu bagi keseluruhan-perjalanan. Calculate the average speed, in km h-', of the bus for the whole journey. (c) Hitung-nilai k, jika-bas-itu-memotong-kereta-Eneik-Kassim setelah bergerak t Ham 40 minit đan bandar-M. Calculate the value of k, if the bus overtook Encik Kassim's car after travelling 1 hour 40 minules from town M. Jawapan/Answer: (a) (b) (c)
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