How fast will you be traveling at the bottom of the hill?

Hi there!! My question is bolded below :) It is a multiple choice question, so I have also listed every possible answer.    A person with a mass of 42kg starts from rest at position A, as shown, and then slides down to positions B, C, and D. Calculate the gravitational potential energy of the person at A.   412 J   672 J   4.2 kJ   6.6 kJ Thanks!

Question 8 This graph shows different types of energy for a roller coaster car that starts at the top of a large hill and goes down to its lowest point at 6 s. Energy of a Roller Coaster Car 500 450 400 According to the graph, what is the most likely relationship between height and potential 350 3 300 energy? 250 200 150 100 50 2 4 8. 10 Time (s) -Mechanical Energy ....... Potential Energy Kinetic Energy Your answer: They are directly related. They are inversely related. There is no relationship between the two. There is not enough information for a conclusion. Energy (kJ)

Please use the information in the picture to answer the question: How fast must it have leapt from the water to reach a such a great height and speed. If you stand at the bow where you can reach up to a height of 3m above the water. You can only catch a fish if it is traveling under 8.5m/s when it reaches you. Will you be able to catch the fish? Find the speed of the fish at your location. Hint: use energy conservation.

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

= 7.50 m. The figure below shows a box with a mass of m = 7.10 kg that starts from rest at point A and slides on a track with negligible friction. Point A is at a height of ha A MET 3.20 m 2.00 m m ha (a) What is the box's speed at point B (in m/s)? m/s What is the box's speed at point C (in m/s)? m/s (b) What is the net work (in J) done by the gravitational force on the box as it moves from point A to point C?

A roller coaster of mass 500 kg is at its highest point in a loop traveling at a velocity of 4 m/s. The loop is 15 meters tall. Assuming 5 kJ of energy is lost between the highest and lowest point of the loop, how fast is the roller coaster traveling when it reaches the lowest point of the loop? 15.3 m/s 28 m/s O None 17.2 m/s

Review A Bookmark Stewart, Justin Physics: Unit 3- Energy / 1 of 4/ Activity 1 Task: Potential & Kinetic Energy Activity 1 of 5 At what point in this roller coaster does the roller coaster have the most gravitational potential energy? A roller coaster starts from rest at point A. The mass of the cart with O A. Point A riders is 900 kg. The motor of the roller coaster does work to get the car up the hill to point B. From point B, the car relies on energy transformations to make it through the rest of the shown portions of the roller coaster. [g=9.8 m/s²] B. Point B C. Point C O D. Point D A

Karen and Randy are playing with a toy car and track. They set up the track on the floor as shown in the figure below, where the apparatus on the far left is used to launch the car forward by pressing down on the top portion. After the car is launched, it follows the track and continues upward, leaving the track. If the car has a mass of 127 g and it reaches a maximum vertical height of 2.90 m above the floor, what was the speed of the car while it was moving along the floor? Ignore the effects of friction and air resistance. m/s

A roller coaster car travels with a speed of 2.29 m/s at point A, located 10.7m above the ground. Calculate how fast the roller coaster is moving when it reaches point D, 10.7m below point A. Assume the roller coaster is ideal and loses no energy to friction.