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meter
waktu:
sekon
jarak yg ditempuh B:
meter
km
Semoga membantu :)
setiap detik jarak mereka bertambah dekat 40 m - 20 m = 20 m
mereka berpapasan pada detik = 2400 / 20 = 120 sekon
Jarak total = 40 m/s . 120 s = 4800 m