A person exerts a horizontal force of 500 N on a box, which also experiences a friction force of 100N. How much work is done against friction when the box moves a horizontal distance of 3m?

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Q: 1. How much work is done by a person pushing a box with a constant force of 300 N: a. if it is too…

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Q: A 25 kg box is pushed up a ramp that makes a 15 degree angle with the horizontal.  The ramp is 15…

A: (a)Work done by ramp is zero when friction is negligible.      (b)Work done by gravity is:-…

Q: 2. A 10-kg mass is dragged on a horizontal frictionless surface by a force F(x) = 2x + 1 (N) that…

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Q: A 2.00-kg (20.0-N) stone is dropped from a height of 5.0 m, and strikes the ground with a velocity…

A: Weight of stone (w) = 20 N Mass of stone (m) = 2 kg Initial height (h) = 5 m Velocity with which the…

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A: We  know that when an object is on the height of h from the ground the  Gravitational potential…

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A: Mass of bird (m) = 5.5 kg Height of bird above ground (h) = 12 m g = 9.8 ms2

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Q: QUESTION 6 A college student pushes a 40-kg filing cabinet that is initially at rest with a…

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A: Given: Person X pushes twice as hard against a stationary brick wall as person Y. To Find: Which one…

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Q: What is the minimum amount of work needed to lift a 3 kg box 2 meters? a. 60 J b. 5 J c. 15 J d. 120…

A: Mass, m = 3 kgHeight, h = 2 mWork done, W = ?

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Q: A 5.0-kg block that initially has a speed of 6.0 m/s is moving in a straight line on a level surface…

A: Concept Work done by all forces is equal to change in kinetic energy Since only frictional force is…