What is the magnitude of the force needed to keep a 60.-newton rubber block moving across level, dry asphalt in a straight line at a constant speed of 2.0 meters per second?

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09-12-2022
Physics

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What is the magnitude of the force needed to keep a 60.-newton rubber block moving across level, dry asphalt in a straight line at a constant speed of 2.0 meters per second?

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qwterabite qwterabite · Answer 1 · 2022-12-19T04:56:22-05:00

The magnitude of the force needed to keep the block moving at a constant speed is 60 N.

his is the same as the weight of the block. This is because the only force acting on the block is gravity. As the block is moving at a constant speed, the force of friction is equal to the force of gravity. This means that the magnitude of the force needed to keep the block moving is equal to the weight of the block, which is 60 N. To calculate this, we used the equation F = ma, where F is the force, m is the mass of the block, and a is the acceleration, which is 0 in this case. This gave us the equation F = m x 0, which is simplified to F = 0, meaning the magnitude of the force needed is 0, which is equal to the weight of the block, which is 60 N.

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