Which is an ideal reference point?, A colored object, A person running, A cloud in the sky, A nonmoving landmark, What is the basic unit for measuring distance?, Feet, Meter, Centimeter, Kilometer, What is the basic unit for measuring time?, Hour, Minute, Second, Month, What is the average speed of the cyclist if he travels 30 kilometers in two hours?, 10 km/h, 15 km/h, 30 km/h, 60 km/h, Bella is walking along a sidewalk. Which of the following sentences is true?, Bella is not moving with respect to the sun., Bella is not moving with respect to the sidewalk, Bella is moving with respect to the building at the corner, Bella is moving with respect to another person who is walking beside her..

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