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Use work and energy principles to calculate a speed or a height or an energy value. Most problems include little to no little scaffolding. Includes 10 problems.
- Legacy Problem Set
This collection of problem sets and problems target student...
- Legacy Problem Set
This collection of problem sets and problems target student ability to use energy principles to analyze a variety of motion scenarios.
Review the units of work, energy, force, and distance. Use the equations for mechanical energy and work to show what is work and what is not. Make it clear why holding something off the ground or carrying something over a level surface is not work in the scientific sense.
Practice your physics skills with randomly-generated work, energy and power questions that include word problems and solution setups.
Work and Power Problems. Previous Next. Problem : A 10 kg object experiences a horizontal force which causes it to accelerate at 5 m/s2, moving it a distance of 20 m, horizontally. How much work is done by the force? The magnitude of the force is given by F = ma = (10) (5) = 50 N.
On the following pages you will find some problems of work and energy with solutions. Try to do them before looking at the solution. Work and Energy - Work done by a constant force. Work and Energy - Work done by the weight force and potential energy.
We can again use the Work-Energy Theorem to determine the work done by friction as the skier slides up the ramp. We know that the speed of the skier at the bottom of the ramp is \(v_i\), and we just found that the speed of the skier at the top of the ramp is \(v_t=\sqrt{v_f^2-2gh}\).
