Questions #8-9 start with the same description. A 1,100 kg horse is walking at 2.0 m/s. What type of energy is being described? Your answer: O chemical O elastic O gravitational O kinetic

1. A Roller Coaster showing in the picture bellow of mass of M=149 Kg is moving through the 3 hills until the end of the rid. if the first hill has Hight of H1=24 m, the second hill H2 = 17 m and the Third hill H3= 12 m. calculate the following: First hill M Scale 1.0 cm 3.0 m Second hill hill ⠀⠀ End of ride a) Potential energy at the maximum height (first hill) in (J) : b) The Kinetic Energy in the second hill :: c) the velocity of the car in the third hill :: d) The velocity of the car at the end of the rid (e) Kinetic energy at the end of the hall (J) :

An object with an initial potential energy of 40 J is dropped from rest. After a while, its potential energy is 10 J, and its kinetic energy is 5 J. Construct a possible scenario that might explain this situation.

Flapping flight is very energy intensive. A wind tunnel test on an 89 g starling showed that the bird used 12 W of metabolic power to fly at 11 m/s. A migrating starling flies steadily at 11 m/s for 1.0 h, using energy from its fat stores. How many grams of fat does it burn?

A child throws a stone upwards. While the stone is moving upwards the gravitational force does positive work on it and the gravitational potential energy increases. the gravitational force does positive work on it and the gravitational potential energy decreases. the gravitational force does negative work on it and the gravitational potential energy increases. O the gravitational force does negative work on it and the gravitational potential energy decreases.

Karen lifts a 10.0 kg box up from the ground to a height of 1.50 meters. He then lowers the box to 0.630 m above the ground. What is the change in potential energy of the box in Joules?  change in potential energy between final and inital height.

Your answer is partially correct. A floating ice block is pushed through a displacement d 27.0 m Ji - (24.0 m )j along a straight embankment by rushing (298 N )i – (183 N ) water, which exerts a force on the block. How much work does the force do on the block during the displacement? Number i 3654 Units

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?

Jacob is riding his bike down a tall hill. At the top of the hill, he has 2800J of potential energy. At the bottom of the hill, when he is going the fastest, his kinetic energy measures 2650J. Which statement below is true? (AKS 7a/DOK 2) 4. A. The total amount of energy at the bottom of the hill cannot equal the amount at the top, because some of the energy is destroyed. B. The total amount of energy at the bottom of the hill cannot equal the amount at the top, because some of the energy is gained. C. The total amount of energy at the bottom is equal to the amount at the top, but he gained some energy as he traveled due to a higher speed. D. The total amount of energy at the bottom is equal to the amount at the top, but some energy was converted into other forms due to friction.

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