Forces And Motions By Becky What is a Force? A Force is a push or pull against an object that causes it to move or change. Force is applied on one object by another. No object has a force inside of it. The idea of a force is not limited to living or non-living things. When a force acts upon an object it will result in a change in speed and direction. Each force that is applied to an object has strength and direction. . How is a force important in daily life? Without any forces no one would be able to open or close things, we also wouldn't be able to lift anything. Forces cause the motion of objects to change. Forces act in pairs. A force can change the speed, direction and shape of any object. There are so many things that require force to move, one object that is moved with force is a cardboard box. Forces control changes in motion. Forces accelerate the speed of moving objects by changing how fast or slow it is going. Whenever there is an interaction between two objects there is a force upon each of the objects. What are the different kinds of forces There are nine different forces in total, each force has a different point and meaning. All forces are divided into two main topics these are contact forces and action at a distance forces. A contact force is something that you can see happening like physical touch. Action at a distance force is something you can not see happening, it is a force that pulls together anything you can touch. Contact Forces Action at a distance forces Tension force Pulling a rope Gravitational A ball thrown in the air Normal force Book on a table Electrical The charge in a bulb Air resistance A hot air balloon Magnetic Interaction between two magnets Applied force Pushing a trolley Spring force Jack in the box Friction Pushing a box Archimedes Around 200bc a greek mathematician from the ancient city of sicily stated ” If you give me a place to stand and a lever long enough I will move the world. Scientists worked with this principle and were able to come up with equations like below to calculate the exact force required to move or lift a weight. Sir Isaac Newton Sir Isaac Newton is most famous for his scientific discoveries around gravity and the three laws of motion, but he also explored light and colour. E = mc2 is the world`s most famous equation and was discovered by Sir Isaac Newton.He also discovered gravity form an apple falling on his head from a tree. The equation says that energy and mass are compatible, they are in different forms of the same thing. In maths he made significant contributions to calculus.His most famous discovery was gravity. He realised that the earth needed something that pulls objects down rather than letting them float upwards. Also he discovered that gravity pulls objects towards each other. He then used this theory about gravity to explain that gravity keeps the moon orbiting around the earth. Newton's Three laws Sir Isaac Newton's First Law states “every object will remain at rest or in uniform motion in a straight line unless compelled to change its state y the action of a external force”. Newton's Second Law of motion states “F = ma or force is equal to mass times acceleration. A larger force acting on an object will cause a larger acceleration and an object with a larger mass will require more force to accelerate”. Newton's Third Law of motion states “forces always act in equal but opposite pairs. Eg for every action there is an equal but opposite reaction”. Isaac Newton discoveries Invented the reflecting telescope Proposed new theory of light and colour Discovered calculus Developed three laws of motion Devised law of universal gravitation Advanced early modern chemistry Timeline of Isaac Newton Dates Events 1643 Isaac newton was born in Lincolnshire 1662 - 1665 He studied at Cambridge University 1665-1667 He continued his studies at home alone 1667-1669 He became the lucasian professor of mathematics 1696 He became the warden of the royal mint in london 1703-1727 He was the president of the royal society 1727 He passed away 2017 A coin was made by the royal mint in his honour Energy Task 2 What is energy? Scientists think of energy as the ability to do work. People have learned how to change energy from one form to another so that we can do work more easily and more comfortably. Energy moves cars along the road and boats along the water. Energy allows our bodies to grow and for our mind to think. There are many different forms of energy, these include heat energy, light energy, motion energy, electric energy, chemical energy, gravitational energy , kinetic energy and potential energy. Ways to Transfer Energy - A toaster transforms electrical energy into heat energy A windmill through a turbine to make electricity - A microphone transfers sound energy into electrical energy Water through a turbine to make electricity - A solar panel transfers light energy into electrical energy Electricity through a motor to make things move - A battery stores electrical energy for use later on A kettle transforms electricity into heat heat energy - Lightning converts electrical energy into heat, light and sound energy. Reflection Task 3 Reflection What Is The Most Interesting Thing I Learnt? The most interesting thing that i learnt is that the longer the lever the easier it is and less force required to move the object. What was the most challenging thing I Learnt? The most challenging thing i learnt was the transitions of energy. I found it hard to discover energy transformations. What did I Learn? I learnt the meaning of a force and how to understand what a force is. What did I enjoy Learning? I enjoyed learning all the different types of forces and what all the examples where How can I apply force in a real world problem Say I was in the middle of the bush and I had a flat tyre and nothing in the car. I could use archimedes principle and find a tree branch long enough and strong enough and a rock big enough and strong enough to use as a fulcrum. I would be able to lift the car enough to change the tyre. Depending on the length of the tree branch will determine how much force I will apply to lift the car. Bibliography https://www.twinkl.com.au/blog/who-is-isaac-newton-facts-for-kids https://www.physicsclassroom.com/class/newtlaws/Lesson-2/Types-of-Forces https://www.eia.gov/energyexplained/what-is-energy https://eschool.iaspaper.net/what-is-energy/ Thank you for listening to my project By Becky
