4) A block of 1 kg falls from a vertical cliff of height 100m. a) Calculate the velocity of the block right before it hits the ground? b) Calculate the work done on the block by gravity? c) Is this work negative, positive or zero, explain why?

Q: 17. GO A water-skier is being pulled by a tow rope attached to a boat. As the driver pushes the…

A: The given values are,

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A: The expression for the required change in kinetic energy,

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A:

Q: Pete Zaria works on weekends at Barnaby's Pizza Parlor. His primary responsibility is to fill drink…

A:

Q: Assume that you are driving a car 2000kg car at the sped of 20m/s(72km/h). You then see a tree at…

A: Given : mass of car, m = 2000 kg              velocity of car, v = 20 m/s             coefficient of…

Q: 10-A person lifted a 10.0-kg bucket from thebottom of a 10-m deep well. The bucket startedfrom rest…

A: mass = 10 kg  Height = 10 m  u initial velocity = 0 m/s v = 1 m/s we need to calculate work done

Q: 6. Consider the system shown in Figure 1.6. The rope and pulley have negligible mass, and the pulley…

A:

Q: Your brand new refrigerator falls out of the back of vour truck while you are traveling m 45.0*…

A: Your brand new refrigerator falls out of the back of vour truck while you are traveling m 45.0*…

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A:

Q: Calculate the Work = F x d done by gravity that pushes the car down the ramp. Which d (distance) do…

A: Analyze the following figure. The component of the gravitational force that is pushing the car down…

Q: done

A:

Q: Pete Zaria works on weekends at Barnaby's Pizza Parlor. His primary responsibility is to fill drink…

A: Since, you have uploaded a question with multiple sub-parts, we will solve the first three sub-parts…

Q: 3. Lamar Gant, U.S. powerlifting star, became the first man to deadlift five times his own body…

A: Mass M= 300lb = 136.078kg Height = 35.435 man

Q: 4) A 1.5 kg projectile is fired from the edge of a 20-m tall building with an initial velocity of vo…

A: Height of the building is H = 20 m Mass of the object is m = 1.5 kg Initial velocity of the object…

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A: Given: mass of the boy (M) = 35 Kg            height of the building (h) = 170 m            Time…

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A: Given data: Mass (m) = 2.00 kg Weight (mg) = 20.0 N Height (h) = 5.0 m Initial velocity (v0) = 0 m/s…

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A:

Q: 79. An airplane pilot fell 370 m after jumping from an aircraft without his parachute opening. He…

A: if work W is done on the object then its KE changes by the magitude of W  the KE may increase or…

Q: I am am doing problem 5. from Serway and Vuille - 11th edition. I dont understand why they use sin…

A:

Q: A 1.100 kg block slides down a frictionless inclined plane (height 0.800 m), moves across a rough…

A: mass of first block (m) = 1.1 kg Initial height of first block (h) = 0.800 m work done by friction…

Q: Your brand new 75.0-kg refrigerator falls out of the back of your truck while you are traveling up a…

A:

Q: hockey referee drops a 175g hockey puck from rest vertically downward from a height of 1.05 m above…

A: Given : m = 175 g = 0.175 kg ∆y = 1.05 m

Q: 7. A ball is thrown straight up. Neglecting air resistance, which statement is not true regarding…

A: A ball is thrown straight up with some initial velocity. Air resistance is neglected.

Q: the first four parts please

A: The mass of the piano (m)Distance (d)The angle of incline

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A:

Q: A cave rescue team lifts an injured spelunker directly upward and out of a sinkhole by means of a…

A: It is given that,

Q: You throw a stone with a mass of 215 g straight up in the air. It reaches a maximum height of 12.0…

A: Given : Mass of stone (m) = 215 g = 0.215 kg Height (h) = 12 m

Q: During practice, a hockey player passes the puck to his coach who is 6.5 m away. The puck, which has…

A: Velocity of the puck after travelling 0.18 m v2=u2+2asv=2Fms                          u=0;F=ma=248.2…

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A:

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A:

Q: A boy and a girl pull and push a crate along an icy horizontal surface, moving it 13 m at a constant…

A: wb=Fb∆dcosθb     =75×13×cos32     =826.85 JWg=Fg∆dcosθg      =904 J

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A: Let u be the initial velocity, v be the final velocity at a height h, m be the mass of the…

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A: Given data-  Car has initial speed u=104 km/h at the bottom of hill. (a) the car has the initial…

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A:

Q: A force, varying with distance as shown in the graph below, acts on a 5.5 kg object. a. When is most…

A: Given that Object mass(m)=5.5 kg Force vs position graph is given as To determine that- (a)When is…

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A:

Q: 4) Two boxes are on a frictionless work surface that is 5m off the ground. The second mass on the…

A:

Q: Using energy considerations, calculate the average force (in N) a 62.0 kg sprinter exerts backward…

A:

Q: "Rocket Man" has a propulsion unit strapped to his back. He starts from rest on the ground, fires…

A: Let u be the initial velocity, v be the final velocity at a height h, m be the mass of the…

Q: 3. A 60 kg boy does 60 push-ups in 40 s. With each push-up he must lift an average of 70 % of his…

A: Given, Mass=60kg Time=40s

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A: Using the law of conservation of energy K.E=Work done against friction+P.EE = Ffd +mghFor an…

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A:

Q: A 5 kg object is released to move on an inclined plane with a speed of 8 m/s as shown. The object…

A: