Physics

Dina walked North and East and has a resultant displacement of 125, 35^0 East of North. She has a velocity of 2.5 m/s. Compute her walking time and average speed.

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asked by Jade
  1. Actual distance = sum of length of paths

    Distance = sum of northings and eastings
    = 125cos(35°)+125sin(35°)
    = 102.4+71.70 m
    = 174.09 m

    Time = Displacement / velocity
    = 125/2.5=50s

    Speed = Distance / time
    = 174.09/50
    = 3.48 m/s

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