September 2018 1 42 Report
Jodi dan lina membantu ibu mendorong troli belanja di mini market. mereka memberikan gaya berturut turut sebesar 52,5 N dan 42N. gaya gesek antara roda troli dgn lantai sebesar 49 N. Jika massa troli dan barang 50 kg, percepatan troli yg sedang didorong sebesar ...... m/s*

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