A man walks 7 km, east in 2 hours and 2 km in 1 hour in the same direction. a) what is the man’s average speed for the whole journey?

Question

A man walks 7 km, east in 2 hours and 2 km in 1 hour in the same direction. a) what is
the man’s average speed for the whole journey? b) what is the man’s average velocity
for the whole journey?

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Thành Công 6 months 2021-08-07T15:38:33+00:00 1 Answers 12 views 0

Answers ( )

    0
    2021-08-07T15:40:28+00:00

    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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