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An object is moving along a circular path of radius r. (5 marks)
(a) Show that its velocity vector is perpendicular to the radial
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A lamp is located on the ground 10m from a building. A person 2m tall walks from thelighttowardthebuildingatarateof2m/s.
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A runner sprints around a circular track of radius 100m at a constant speed of 7 m/s. The runner’s friend is standing at a
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Answers (1)
An object is moving along a circular path of radius r. (5 marks) (a) Show that its velocity vector is perpendicular to the radial rays at any moment. This confirms that the velocity vector is tangent to the path, as it should be. (b) Show that its
