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alukav5142 [94]
3 years ago
5

A man walks 7 km, east in 2 hours and 2 km in 1 hour in the same direction. a) what is

Physics
1 answer:
Rzqust [24]3 years ago
8 0

Explanation:

Average speed = distance / time

|v| = (7 km + 2 km) / (2 hr + 1 hr)

|v| = 3 km/hr

Average velocity = displacement / time

v = (7 km east + 2 km east) / (2 hr + 1 hr)

v = 3 km/hr east

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The amplitude of a sound is the A. frequency of the sound. B. magnitude of displacement of a sound pressure wave. C. psychologic
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a car travels from station A to B at 30kmph during its return trip A it travels 30 km pH for the first half distance and it 70 k
8_murik_8 [283]

Explanation:

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3 0
3 years ago
10.0 ppm 10.4 ppm 10.2 ppm 10.8 ppm 10.1 ppm 10.5 ppm 10.1 ppm Using the new instrument on the first day the technicians got a v
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The datapoint 9.0 ppm is outlier at the 90% confidence level.

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