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Juli2301 [7.4K]
3 years ago
11

Describe how the ancient people follow some natural event to measure time

Physics
2 answers:
ASHA 777 [7]3 years ago
8 0

Answer: they used seasonal wind, temperature changes, they also used the flooding of rivers. all these are used to tell time

Explanation: the seasons change the climate of the area

statuscvo [17]3 years ago
7 0
5 Tools We Use to Measure Time
Sundials.
Water Clocks. - A water clock uses the flow of water to measure time
Mechanical Clocks.- clock are wound with a key, and this tightens the mainspring.
Quartz Clocks- Inside a quartz clock or watch, the battery sends electricity to the quartz crystal through an electronic circuit.
Atomic Clocks.- a clock device that uses a hyperfine transition frequency in the microwave
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Answer:

300 cos 30 = 40 a + 40 * .2 * 10

Total force = mass * acceleration + frictional force

260 = 40 a + 80

a = 180 / 40 = 4.5 m/s^2

Check:

15 a + 15 * 10 * .2 = T    acceleration of 15 kg block (assuming a = 4.5)

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