2 vật cùng xuất phát 1 lúc và đi ngược chiều nhau, từ 2 điểm A và B cách nhau 600m. Vận tốc đi A là 10m/s và B là 20m/s hỏi sau bao lâu thì 2 vật gặp nhau

total distance travelled = 60 miles

total time taken =1.5 hours

average speed = total distance / total time

60 / 1.5

= 40

therefore, average speed = 40 m/h

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absorption lines are where light has been absorbed by the atom thus you see a dip in the spectrum whereas.

emission spectra have spikes in the spectra due to atoms releasing photons at those wavelengths.

explanation:

well, you would divide 135 by 33 to get your answer. then that is how many seconds it would take. boardman should fly about 132 m or 4.090909090909091 seconds.