Answer the following questions. 1 Write about the effect that force produces in each of the following cases :- (a) Kicking a soccer ball (b) Applying brakes in a car. (c) Pressing a balloon filled with water. (d) Pushing a moving swing, 2. What are the various kinds of force? 3. When is work actually said to be done? 4. Describe some common forms of energy (any four). 5. What are simple machines? Give any two examples.
Answers
Answer:
Answer in the explanation :-
Explanation:
1. (a) It moves the ball.
(b) It stops the car
(c) It will pop the balloon.
(d) It will make the swing faster.
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2. Gravitational, electrical, and magnetic.
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3. When an object is moved or stopped.
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4. (a) Thermal (Heat) Energy
Thermal energy is created from the vibration of atoms and molecules within substances. The faster they move, the more energy they possess and the hotter they become. Thermal energy is also called heat energy.
(b) Chemical Energy
Chemical energy is stored in the bonds of atoms and molecules – it is the energy that holds these particles together. Stored chemical energy is found in food, biomass, petroleum, and natural gas.
(c) Nuclear Energy
Nuclear energy is stored in the nucleus of atoms. This energy is released when the nuclei are combined (fusion) or split apart (fission). Nuclear power plants split the nuclei of uranium atoms to produce electricity.
(d) Electrical Energy
Electrical energy is the movement of electrons (the tiny particles that makeup atoms, along with protons and neutrons). Electrons that move through a wire are called electricity. Lightning is another example of electrical energy.
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5. They are the simplest mechanisms known that can use leverage (or mechanical advantage) to increase force. The simple machines are the inclined plane, lever, wedge, wheel and axle, pulley, and screw.
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Hope this helps you
Answer:
l can't write question 1, but
question 2.ans:There are different types of force such as-- gravitational force or gravity, magnetic force or magnetism, electrostatic force, buoyant force, mechanical force, and frictional force or friction..
question 4.ans: Heat energy, light energy, wind energy, and solar energy..
question 5. ans: A machine that uses a single applied force (effort) to overcome a single force (load) is called a simple machine. two examples of simple machines are are lever ,Pully, screw etc..