a kinetic energy of 40.5J? 6. What is the velocity of a Wii remote flung from a hand through a TV, with a kinetic energy of 1.44J and a mass of 4.5kg? 7.What is the mass of an automatic door closing 0.2m/s, with a kinetic energy of 1.6J? 8. What is the mass of a wind turbine blade with a kinetic energy of 104040J, turning at 6m/s?
78.125J of kinetic energy and moves at 25 m/s before it hits the wall. How much mass does it have? 16. A slightly disturbed man of 80kg runs directly into a wall with a kinetic energy of 4000J. How fast is he running? Combined questions 17. A rather unbalanced goat jumps off a cliff. The goat has a mass of 50kg and the cliff is 450m high.
Kinetic Energy Practice Problems 1. What is the Kinetic Energy of a 150 kg object that is moving with a speed of 15 m/s? 2. An object has a kinetic energy of 25 J and a mass of 34 kg , how fast is the object moving? 3. An object moving with a speed of 35 m/s and has a kinetic energy of 1500 J, what is the mass of the object. 4.
1.4 Determine the kinetic energy of the briefcase when it hits the floor. Justify your answer (3) [10] 2. A cricket ball of mass 160 g travels at a speed of 20 m.s-1. 2.1 Define “kinetic energy”. (2) 2.2 Calculate the kinetic energy of the ball. (4) 2.3 Determine the speed of the ball if it has TWICE this amount of kinetic energy (as
Kinetic Energy Practice Questions Answer Key - Free download as PDF File (.pdf), Text File (.txt) or read online for free. This document provides 10 practice problems for calculating kinetic energy using the kinetic energy formula KE = 1/2mv^2. It gives the kinetic energy, mass, and speed for each problem and shows the step-by-step work. The problems cover calculating kinetic energy given mass ...
Solve problems involving gravitational potential energy and kinetic energy using formulas and graphs. This PDF document contains seven questions with solutions and explanations.
This final example uses the conservation of energy. In questions like these, use both the kinetic energy and the potential energy of an object to solve the problem. It is a good idea to show your working at each step of the problem as you rearrange the equation. Example: A lump of ice falls from an aeroplane as it comes in to land. If the
9. (a) Calculate the kinetic energy of a 3.1 kg toy cart that moves at 4.8 m/s. (b) Calculate the kinetic energy of the same cart at twice the speed. 36 J 140 J 10. Suppose an automobile has 20,000 J of kinetic energy. ... Defend your answers. 30. A bowling ball is traveling at 3 m/s. It starts to roll up a ramp. How high above the ground will ...
Kinetic Energy = ½ x mass x velocity2 Potential Energy = Mass x gravity x Height (in Kg) (m/s) (in Kg) (9.8 m/s2) (in meters) For each problem, write the formula used, show your work, & write your answer with correct units. Example: An 80kg man is jogging at a rate of 4m/s. He has kinetic energy. Calculate it: Kinetic Energy = ½ x mass x ...
Kinetic energy depends on both . Solve the following word problems using the kinetic and potential energy formulas (Be sure to show your work!) Formulas: KE = 0.5 ·m· v2 OR PE = m·g·h v = velocity or speed m = mass in kg g = 10 m/s/s h = height in meters 15. You serve a volleyball with a mass of 2.1 kg. ...
This is a conservation of energy problem, in which we examine the relationship between the particle’s potential and kinetic energies. 5. The correct answer is a. The potential energy stored in the spring is calculated using the Work integral: € W=Fxcosθ € cosθ=cos(0)=1 € P= Work time time= Work Power = mgh P time= (100kg)(10m/s2)(10m ...
Potential energy (PE) = mgh Kinetic energy (KE) = 1/2 m v2 Total mechanical energy = PE + KE Take notes from Power Point: Potential energy sample question: A block is sitting on a platform 20 m high. It weighs 50 kg. How much Potential energy does it contain? Kinetic energy sample question: You serve a volleyball with a mass of .05 kg. The ball ...
Activation Energy of Forward Reaction = 100 kJ/mole Potential Energy of Products = 150 kJ/mole A. Please identify the following on the diagram you created in question #9. Place this letter above its corresponding line segment on the graph and the value in the adjacent column. Component of Potential Energy Diagram Symbol Value
6 Kinetic energy depends on both . Solve the following word problems using the kinetic and potential energy formulas (Be sure to show your work!) Formulas: KE = 0.5 ·m· v2 OR PE = m·g·h v = velocity or speed m = mass in kg g = 10 m/s/s h = height in meters 15. You serve a volleyball with a mass of 2.1 kg. ...
Solve the following word problems using the kinetic and potential energy formulas (Be sure to show your work!) 15. Determine the kinetic energy of a 1000-kg roller coaster car that is moving with a speed of 20.0 m/s. 16. If the roller coaster car in the above problem were moving with twice the speed, then what would be its new kinetic energy? 17.
An object gets potential energy from height, mass and gravity. An object with potential energy has the potential to do work. This potential is only released when the object falls. Kinetic Energy Kinetic Energy is energy of motion. An object gets kinetic energy from its mass and velocity. An object with kinetic energy has energy stored in motion.
Use the diagram below to answer questions 10 and 11. 10. Which number represents the position when the cart has the most kinetic energy? a. 1 b. 2 c. 3 ... Kinetic energy is energy _____. Use the chart to make a list of examples of potential and kinetic energy. Use the picture above to help you explain the difference ...
This final example uses the conservation of energy. In questions like these, use both the kinetic energy and the potential energy of an object to solve the problem. It is a good idea to show your working at each step of the problem as you rearrange the equation. Example: A lump of ice falls from an aeroplane as it comes in to land. If the
Kinetic Energy = ½ x mass x velocity2 Potential Energy = Mass x gravity x Height (in Kg) (m/s) (in Kg) (9.8 m/s2) (in meters) For each problem, write the formula used, show your work, & write your answer with correct units. Example: An 80kg man is jogging at a rate of 4m/s. He has kinetic energy. Calculate it: Kinetic Energy = ½ x mass x ...
