To a stationary observer, a bus moves north with a speed of 10 m/s. a man inside walks toward the back of the bus with a speed of 0.4 m/s relative to the bus. what is the velocity of the man according to a stationary observer? a. 0.4 m/s north b. 10.4 m/s north c. 10 m/s north d. 9.6 m/s north
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