please help Questions:1- Define the energy and name three of its forms2- What is the difference between conservative and non-conservative force? Give anexample of each force.33- Write down the principle of conservation of mechanical energy.4- A single frictionless roller-coaster car of mass m = 750 kg tops the first hill with speedv= 15 m/s at height h = 40 m as showni- Find the speed of the car at B and CFisthill-ii- If mass m were doubled, would the speed at B increase, decrease, or remain the same?5- Conclusions:

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Answered: 1- Define the energy and name three of…

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Physics

1- Define the energy and name three of its forms.

College Physics

10th Edition

ISBN:9781285737027

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter5: Energy

Section: Chapter Questions

Problem 4P: a shopper in a supermarket pushes a cart with a force of 35 N directed at an angle of 25 below the...

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a shopper in a supermarket pushes a cart with a force of 35 N directed at an angle of 25 below the horizontal. The force is just sufficient to overcome various frictional forces, so the cart moves at constant speed, (a) Find the work done by the shopper as she moves down a 50.0-m length aisle, (b) What is the net work done on the cart? Why? (c) The shopper goes down the next aisle, pushing horizontally and maintaining the same speed as before. If the work done by frictional forces doesnt change, would the shoppers applied force be larger, smaller, or the same? What about the work done on the cart by the shopper?
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