In a physics lab, a Hot Wheels car starts at an elevated position, moves down an incline to the level ground, strikes a box and skids to a stop. Consider three states for the car: state A is the top of the incline; state B is the bottom of the incline before striking the box; state C is after the car has been brought to a stop. Use the diagram above (Image #4) and your understanding of the work-energy theorem to construct bar charts for the motion from A to B and from B to C. please help!

A cat had climbed at the top of the tree. The tree is 20m high and cat weighs 6kg. How much potential energy does the cat have. Attach the units when solving and show the cancellation of units. Show your complete solution and write clearly. Thank you.

A roller-coaster car has a potential energy of 400,000 J (400 kJ) and a kinetic energy of 130,000 J (130 kJ) at point A in its travel. At the low point of the ride, the potential energy is zero, and 60,000 J (60 kJ) of work has been done against friction since it left point A. What is the kinetic energy of the roller coaster at this low point (in kJ)? Show work and plug in numbers.

on 3 A roller coaster car travels along the track as shown in the image. Which statement about the energy changes between Points 1 and 2 and between Points 2 and 4 is correct? Select one: (Total energy increases between Points 1 and 2 and decreases between Points 2 and 4. Potential energy decreases between Points 1 and 2 and increases between Points 2 and 4. Kinetic energy decreases between Points 1 and 2 and increases between Points 2 and 4. (Total energy decreases between Points 1 and 2 and increases between Points 2 and 4. Image Source: WGBH 0