Explain the relationship between kinetic energy and gravitational potential energy during a vertical jump? Talk about the entire jump and explain the relationship among max kinetic energy vs. max gravitational potential energy vs total energy.

A 2kg package is moves up along a 10 m ramp AC inclined at 15' with an initial speed of 5 m/s. Knowing that the coefficient of sliding friction between the package and the incline is 0.2, answer the following questions: 10 m B 15° d 1. What force/s do/does NOT do any work on the package as it moves along the incline? 2. What is the work done by friction on the package as it moves a distance x along the incline? 3. What is the change in the kinetic energy from A to B if at position the package becomes zero? 4. What is the change in the potential energy from A to B if at position B the velocity of the package 5. What is the maximum distance that the package will move up the incline?

Consider a mass m=81.6 kg sliding on a frictionless surface as shown in the figure below. It begins with a speed of vi = 1.81 m/s at a height of yi = 21.4 m above the ground. It then travels down one hill and up the next until it momentarily comes to rest with a speed vi = 0.  a) What is its kinetic energy of the mass at the start? b) What is its gravitational potential energy of the mass at the start?

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I drive a Nissan Leaf to work. With the e-pedal on, the motor recovers energy through braking very aggressively. I need about 7 KW-hour to come to school if I use mostly the freeways. That’s about 5 KW-hour if I take mostly local streets. From the energy perspective, can you offer an explanation to explain this difference?

A child with a weight of 110 N swings on a playground swing attached to 1.90 m long chains. What is the gravitational potential energy (in J) of the child-earth system relative to the child's lowest position at the following times? a) when the chains are horizontal. b) when the chains make an angle of 25.0° with respect to the vertical and c)when the child is at his lowest position

The top of a descending ski slope is 50 m higher than the bottom of the slope. A 60-kg skier starts from rest and skis straight to the bottom of the slope. If 20% of the gravitational potential energy change of the skier  is converted into internal energy (due to friction and air drag), how fast is the 60-kg skier traveling at the bottom of the slope? Again, represent the process with work-energy bar charts indicating the system, the initial state, and the final state.

A 20 N ball is thrown upward with an initial  kinetic energy of 100 J. How much gravitational potential energy will the ball have when it reaches the top of its path?   2000 J 100 J 50 J 5 J   Which is correct?

Practice Worksheet/Reference Sheet Information: Consider a 2-kg bowling ball that sits on top of a building that is 40 meters tall. It falls to the ground. Think about the amounts of potential and kinetic energy the bowling ball has: as it sits on top of a building that is 40 meters tall. as it is halfway through a fall off a building that is 40 meters tall and traveling 19.8 meters per second. as it is just about to hit the ground from a fall off a building that is 40 meters tall and traveling 28 meters per second.     Question 2  What is the mass of the bowling ball is ____ The height of the building is ______   Question 3   What is the gravitation constant value here on earth?     Question 4    Does the bowling ball have more potential energy or kinetic energy as it sits on top of the building? Why?     Question 5   Does the bowling ball have more potential energy or kinetic energy as it is halfway through its fall? Why?       Question 6  Does…

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