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Questions in physics
📝 Answered - The moon revolves around Earth at a fairly constant speed. Is the moon accelerating?
📝 Answered - Suppose an astronaut drops a feather from a height of 1.2 meters above the surface of the moon. If the free fall acceleration on the moon is [tex]1.62 \, \text{m/s}^2[/tex] downward, how long does it take for the feather to hit the moon's surface?
📝 Answered - What is required to make a resting object move or a moving object change speed or direction?
📝 Answered - If you apply a net force of 5 N on a cart with a mass of 5 kg, show that the acceleration is one meter per second squared.
📝 Answered - If an object is moving in a circle at constant speed, then it is accelerating. True or false?
📝 Answered - In 2 or 3 sentences, describe how antitrust laws encourage competition.
📝 Answered - A railway engine with a mass of 6000 kg is traveling at 4 m/s when it collides with and couples to a truck with a mass of 2000 kg that is not moving. A. Calculate the momentum of the engine before the collision. B. Show that the engine and the truck moved at a velocity of 3 m/s after the collision.
📝 Answered - Why is there less force between two apples than between the Earth and one apple?
📝 Answered - What forms of energy are produced by a violin?
📝 Answered - What is the unit and tool to measure the mass of a rock?
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