# Force ,Inertia, Momentum

Published on July 19, 2014

Author: ashfaqdte

Source: authorstream.com

SLOs: SLO s Define force, inertia and momentum. Explain the concept of force by practical examples of daily life. PowerPoint Presentation: Index Force Inertia Momentum PowerPoint Presentation: Force Pull or push F Force is a .…… Force is a … 1 PowerPoint Presentation: push Moves a body 1 Force PowerPoint Presentation: Moves a body 1 push Force PowerPoint Presentation: Tends to m oves a body 1 push Force PowerPoint Presentation: Stop a body 3 Pull or push Force PowerPoint Presentation: Tends to stop a body 4 Push Force PowerPoint Presentation: Can change the shape of a body 5 Push Force Force PowerPoint Presentation: Can change the direction of motion 6 Push or pull Force Force Pivot PowerPoint Presentation: A force moves or tends to move, stop or tends to stop the motion of a body. The force can also change the direction of motion of a body. Force PowerPoint Presentation: A force is a push or a pull . A force can make an object move . A force can make a moving object stop . A force can change the speed of a moving object A force can change the shape of an object A force can change the direction of a moving object. Force Fundamental Forces of Nature: Fundamental Forces of Nature Gravity Attraction between any two bodies w/ mass Weakest but most dominant Electromagnetic Forces between any two bodies w/ charge Attractive or repulsive Weak nuclear force – responsible for radioactive decay Strong nuclear force – holds quarks together (constituents of protons and neutrons) Inertia: Inertia of a body is its property due to which it resists any change in its state of rest or motion. Inertia PowerPoint Presentation: How could it happened ? Inertia Inertia Inertia: It tends to stay in that position unless some force puts that object into motion If an object is at rest… Inertia Inertia: INERTIA makes the moving object continue to move at a constant speed in the same direction unless some external force changes the object’s motion If the object is moving…. Inertia PowerPoint Presentation: (Click on any shape) Inertia Inertia: If the motorcycle were to abruptly stop, then the rider in motion would continue in motion. The rider would likely be propelled from the motorcycle and be hurled into the air. Once they leave the motorcycle, the rider becomes a projectile and continues in projectile-like motion. It is because of inertia . Inertia PowerPoint Presentation: How could it happened ? Inertia Inertia: When the cardboard covering the glass is pulled out quickly, the coin resting on the cardboard drops into the glass due to inertia. Inertia PowerPoint Presentation: Coins stocked over remain undisturbed on pulling the paper strip quickly due to inertia. Inertia RELATIONSHIP BETWEEN INERTIA AND MASS: RELATIONSHIP BETWEEN INERTIA AND MASS Inertia Inertia: An object with a larger mass has a larger inertia . mass inertia Mass can influence the effects of inertia. Inertia Applications of inertia: Applications of inertia Some examples of using inertia in our daily life are : The looses head of a hammer To tighten the loose head of a hammer, knock one end of the handle held vertically, on a hard surface. The hammer head will continue on its downward motion when the handle has been stopped, the top end of the handle is slotted deeper into the hammer head. Applications of inertia: 2 . Passengers in a bus Passengers in a bus will lurch forward when its driver applies brakes suddenly . It is because the upper parts of their bodies tend to continue their motion, while lower parts of their bodies in contact with the bus stop with it. Hence, they fall forward. Applications of inertia Applications of inertia: 3 . Passengers in a bus Passenger in a bus will lurch backward when a stationary bus starts to move with forward acceleration. The passengers were originally stationary. When the bus started to move forward with an acceleration, the inertia in the passenger made them maintain their original position. Applications of inertia PowerPoint Presentation: We know that inertia depends upon the mass of a body. A bullet has a very small inertia due to its small mass. But why does its impact is so strong when it is fired from the gun? Click on to Fire Momentum PowerPoint Presentation: On the other hand, the impact of a loaded truck on a body coming its way is very large even if the truck is moving slowly. To explain such situation, we define a new physical quantity called momentum Momentum Momentum: Momentum Momentum of a body is the quantity of motion it possesses due to its mass and velocity. The momentum P of a body is given by the product of its mass m and velocity v. Thus P = m v By the definition of momentum, we can see that an object can have a large momentum if it either has large mass or large velocity. Momentum Facts: Momentum Facts p = m v Momentum is a vector quantity! Velocity and momentum vectors point in the same direction. SI unit for momentum: kg · m /s (no special name). Momentum is a conserved quantity (this will be proven later). A net force is required to change a body’s momentum. Momentum is directly proportional to both mass and speed. Something big and slow could have the same momentum as something small and fast. PowerPoint Presentation: Difference b/w Inertia and Momentum Inertia is proportional to mass. It is a measure of the resistance to changes in velocity. Momentum = mass x velocity Inertia is a property of mass and cannot change. Momentum changes as an object changes its velocity. Momentum Summery: Property of mass to resist in change of position of rest or motion A Push or a Pull The quantity of motion Summery Momentum Force Inertia PowerPoint Presentation: ASHFAQ AHMAD Thank You ! PowerPoint Presentation: List of Contributors of Animated Conceptual Chemistry for Grade ix Developer : Ashfaq Ahmad Saber (Science Teacher ) Green Town Gujrat Reviewers : Agha Abdullaha Yousaf Assistant Director Ch. Muhammad Farooq Assistant Director Supervision : Muhammad Tahir Kashif E.D.O ( Edu .) Distt . Gujrat . Raja Shamraiz Akhter D.E.O (S.E) Distt.Gujrat

17. 07. 2014
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18. 07. 2014
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