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Example: By using the given information in picture given below, find the velocity of the ball at point D. Example: Find the amount of compression of the spring if the ball does free fall from 4m and compresses the spring. Sunshine is radiant energy, which provides the fuel and warmth that make life on Earth possible. Chemical energy is converted to thermal energy when we burn wood in a fireplace or burn gasoline in a car's engine.
Thermal Energy, or heat, is the vibration and movement of the atoms and molecules within substances. Lightning is an example of electrical energy in nature, so powerful that it is not confined to a wire. Nuclear Energy is energy stored in the nucleus of an atom — the energy that holds the nucleus together. Potential energy is stored energy and the energy of position gravitational potential energy, compressed springs etc. John conducted an experiment to investigate the amount of light that passes through four materials, A, B, C and D. Mr Sim wants to construct a screen in his living room to ensure that he can have some privacy in the living room while leaving the main door open. Study the classification chart below carefully.Which of the above materials are classified wrongly? The experiment shown below is carried out in a dark room.Sheets A, B, C and D are arranged in a straight line. Which one of the following energy changes take place when a metal spoon is rubbed on the table?
The diagram below show Marcus driving off the diving board into the water.Which one of the following options below best indicates the energy conversions that take place when Marcus dives off the diving board into the water?
In the following setup, a drop of red ink is placed in the glass tube connecting the two flasks, P and Q.Each flask is placed in a basin of water.


Three new batteries and a new bulb are used to form the following circuits.Which of the above bulbs will light up?
Ali conducted an experiment to find out how he could get the biggest shadow of the ball on the screen.Which one of the following ways will help him achieve his aim? The following table gives information on two plants X and Y, based on three characteristics. The chart below shows the characteristics of eight different objects represented by the letters P, Q, R, S, T, U, V and W.Refer to the chart below and answer the following questions.What characteristic(s) does S and V have in common? When you are sitting on a roller coaster, traveling at a speed of about 100 kilometers per hour, will you think that why it doesn't need any engine?
When the roller coaster has just passed the first "valley", it has a lot of kinetic energy, so it can climb up the second "hill". Suppose that a ball falls from height of 2m, it has only potential energy at the beginning, however, as it falls it gains kinetic energy and its velocity increases.
If the horizontal surface has friction constant Aµ=0, 4 find the distance it travels in horizontal before it stops.
He then kept the plant in a dark place for 2 days.After 2 days of darkness, he put the plant in a bright sunny place for a day. The number of marks available is shown in brackets [  ] at the end of each question or part question.
When it starts to lose height it gains velocity in other word decreasing in the amount of potential energy increases the amount of kinetic energy. At the end of the day, Siva conducted an iodine test on the leaf.Which one the diagrams below shows the result of the test? At h height it has both potential and kinetic energy and when it hits the ground the potential energy becomes zero and kinetic energy has its maximum value. It is totally converted to the kinetic energy, as said in the first sentence nothing can be destroyed or created they just change form. Its potential energy becomes kinetic energy.Energy Transformation in Juggling Any object that rises or falls experiences a change in its kinetic and gravitational potential energy.


The work done on the bob by the gravitational force (weight) pulling it downwards increases its kinetic energy. In summary, energy of the system is always constant, they can change their forms but amount of total energy does not change. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.
As it gains height the gravitational potential energy increases again.At the very top of its swing it stops for a moment. Interpreting Diagrams At what two points is the pendulum’s potential energy greatest?As the pendulum swings to the other side, its height increases. Release it and observe how high it swings.Use a second clamp to reduce the length of the pendulum as shown. The pendulum will run into the second clamp at the bottom of its swing.Pull the pendulum back to the same height as you did the first time.
Explain your observations.Energy Transformation in a Pole Vault A pole-vaulter transforms kinetic energy to elastic potential energy, which then becomes gravitational potential energy. The elastic potential energy of the pole is transformed to the gravitational potential energy of the pole-vaulter. Once he is over the bar, the pole-vaulter’s gravitational potential energy is transformed back into kinetic energy as he falls toward the safety cushion.




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