If a man ran 30m northerly and then 50m southerly in 1 minute. What is his distance? What is his displacement?
What is his speed?
What is his velocity?

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This active feature of earth's crust in building mountain ranges as well as islands. this feature is a a) cavern. b) earthquake. c) mountain. d) volcano.

How do i complete this electrolysis of water lab? i’m at home, so i don’t have the materials, and the lab didn’t properly work and was incomplete at school.