A 1,120-N crate is being pushed across a level floor at a constant speed by a force F of 320 N at an angle of 20.0° below the horizontal, as shown in the figure a below. 20.0° 20.0° a (a) What is the coefficient of kinetic friction between the crate and the floor? (Enter your answer to at least three decimal places.) (b) If the 320-N force is instead pulling the block at an angle of 20.0° above the horizontal, as shown in the figure b, what will be the acceleration of the crate? Assume that the coefficient of friction is the same as that found in part (a). m/s2

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A: Given that-Mass, m= 5 kgForce, F= 12 NDistance, d= 6 mWork done by force, W.D=F→.d→…

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A: This problem can be solved by using work-energy theorem.

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A: The scalar product is given by  A→ . B→ = A B cosθA→ . B→ = 6×4×cos30° = 20.785

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Q: **A positive charge Q1 = 40.0 mC is located at a point X1 = -2.00 m, a positive charge Q2 = 30.0 mC…

A: Given that: Q1=40.0 mC=40.0×10-3 CQ2=30.0 mC=30.0×10-3 CQ3=20.0 mC=20.0×10-3 C

Newton's Second Law

Newton’s laws of motion describe the relationship between the motion of an object and forces acting on it. Newton’s law of motion has two types as follows: