With what velocity will they be separating after collision
Two objects have an elastic collision. Before the collision they approach one another with a velocity of 4m/s. With what velocity will they be separating after the collision?
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An opaque cylindrical tank with an open top has a diameter of 2.60 m and is completely filled with water. When the afternoon Sun reaches an angle of 30.0° above the horizon, sunlight ceases to illuminate any part of the bottom of the tank. How
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