Question

On a trip to the store around the block a bike rider goes 75 m toward the West and 75 m toward the North at a constant speed of 1.5 m/s.
What is the magnitude of the average velocity?

1.1 m/s

0.75 m/s

1.6 m/s

1.5 m/s

Answer 1

The magnitude of the average velocity = 1.5 m/s ( D )

Applying the given data:

Velocity = displacement / time

constant velocity/speed = 1.5 m/s  ( i.e. velocity for each direction )

displacement = 75 m west and 75 m North

∴ Average velocity = ∑ ( velocity for each direction ) / ( number of displace )

                               = (1.5 + 1.5 ) / 2

                               = 3 / 2 = 1.5 m/s              

                                                                                     

Hence we can conclude that the magnitude of the average velocity = 1.5 m/s

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