1. sketch a motion diagram of the skater that starts from rest at the location shown. 2. sketch a graph for the change in gravitational potential energy vs. x- position 3. sketch a kinetic energy vs x- position graph. how does this graph compare to the one in #2. .
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1. sketch a motion diagram of the skater that starts from rest at the location shown.
2. sketch a graph for the change in gravitational potential energy vs. x- position
3. sketch a kinetic energy vs x- position graph. how does this graph compare to the one in #2. .
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- I need help understanding "Potential and Kinetic Energy"3. What is the potential energy formula? a. What is the unit of measurements that each has to be in? b. What is the potential energy of a 350 kg ball sitting at a hight of 3 m?On a recent trip to Chicago, a plane took off and accelerated to a cruising speed of 640 km/hr at an altitude of 10,000 m above the ground. At cruising speed and altitude, did it have more kinetic or potential energy? A. More kinetic B. More potential C. I cannot tell without knowing the plane’s mass
- An object with mass m and a velocity v. What happens to Kinetic Energy when velocity is doubled? a. stays the same b. quadrupled c. halved d. doubled e. not enough infoA track has three hills. A-18m, B=10m, C=5m. Mass of the ball=2kg. The ball descends down the first hill and reaches the bottom (closed system) A. What is the speed of the ball at the bottom of hill A? B. The continues up hill B. What is the speed at the top of the hill B C. The ball continues to roll up hill C. What is the ball speed at the top of the hill C? D. What will be the answer to (a) if a 4kg ball is used? Why?Class Date Name Chapter Work and Energy Review Part A. Vocabulary Review Directions: Match the description in the first column with the term in the second column by writing the correct letter in the space provided. a. energy 1. total amount of kinetic and potential energy in a system b. work c. kinetic energy 2. the ability to cause change d. law of conservation of 3. stored energy due to position energy 4. energy in the form of motion e. gravitational potential 5. Energy cannot be created or destroyed energy f. mechanical energy 6. does work with only one movement of the machine g. potential energy h. simple machine 7. energy stored in chemical bonds 8. ratio of output work to input work i. efficiency j. chemical potential 9. energy stored by things that are above earth 10. SI unit of energy energy 11. force applied through a distance k. joule Part B. Concept Review Directions: Complete tho folle
- Match each example to the type of work or energy described. a swing travels in the same direction it is a. positive work pushed negative work brakes slow the speed of a car C. kinetic energy an insect flying around a room. d. elastic potential energy stretching ofa balloon as it is inflated е. chemical potential energy book on the edge of a high shelf f. gravitational potential energy ham sandwich b.What is the answer to question 1 c and question 21.) A 15 kg mass is dropped from rest a distance of 18 m above the ground. Make certain you show all your work: a. Draw a picture. b. Indicate on your drawing where KE = 0 and where PE = 0 c. Using Conservation of Energy determine the final speed of the object just before it strikes the ground. d. Next, again showing all your work, use 1-dimensional Kinematics to solve the same problem. e. Which method, in your opinion is easier?
- a. Gravitational potential energy and mechanical energy Ob. Potential energy and mechanical energy c. Gravitational potential energy and kinetic energy Od. Potential energy and kinetic energy Clear my choice When a stone is dropped from a bridge to a river below, what happens to the gravitational potential energy halfway down? f 2 Select one: O a. The stone has half the amount of gravitational potential energy and double the amount of kinetic energy. O b. The stone has half the amount of gravitational potential energy and half of it has been converted to kinetic energy. O C. The stone gains momentum, and its potential energy decreases and its kinetic energy increases. O d. The stone gains momentum, and its potential energy decreases. Jamie pulls an elastic band that has a spring constant of 45 N/m, producing a 3.0 J increase in potential energy. How far did Jamie hp2. Consider the concepts of kinetic energy (KE) and gravitational potential energy (GPE) as you complete these questions. A ball is held 1.4 meters above the floor. Use the terms KE of GPE as your answers. A. When the ball is held motionless above the floor, the ball possesses only B. If the ball is dropped, its energy decreases as it falls. C. If the ball is dropped, its energy increases as it falls. D. In fact, in the absence of air resistance, the amount of impact with the floor. energy. energy when the ball is held motionless above the floor equals the amount of energy atAt its maximum speed, a 4 kg sloth can climb a height of 6 m in 2 minutes. A. What is the primary energy transformation that is taking place? B. What is the force required for the sloth to climb at a constant speed? C. How much work does this sloth do climbing the tree? D. How much does the potential energy increase?