PPT-Topic 1 Lesson 1 6 th Grade: energy, motion, force, and work

Vocab Energy the ability to do work or cause change Motion an objects position changes relative to another object Force a push or pull Work when the force exerted is in the same direction as the motion. Grade 2. What is energy?. Energy . is the ability to do work. . Energy can cause things to move. . There are different types of energy such as light, heat, sound, and motion.. We store energy from food in our bodies.. Work. Work is defined as the force parallel to the direction of motion times the distance.. W = F. (parallel) . . . d = F d . cos. . θ. If the direction of the force is opposite of the motion, the work is considered to be negative.. fig_03_022. Nicolaus Copernicus. Copernicus’ Universe. Contrast Copernicus with the Aristotelian Cosmos. GALILEO. Galileo Galilei 1564 - 1642. Galileo's most original contributions to science were in mechanics: he helped clarify concepts of acceleration,. 1.1. Mechanics AS 90940. Achievement Criteria. AS . 90940. S1.1.  . Aspects of mechanics will be limited to a selection from the . following. :. Distance. , speed, interpretation of distance and speed time graphs. Central Force is Confined to a Plane. If p is the linear momentum of a particle of mass . µ. , the torque . τ. about an axis passing through the center of force is :. If the angular momentum L of mass . Dynamics. Work/Energy/Power. Kinematics. Constant Velocity. Constant Acceleration. Projectile Motion. 1D Motion Graphs. Consider the . position vs time. graph for objects A and B below.. Describe how the motion of object A is different from that of object B.. Work is done when:. A . force . is exerted on an object. An object has a . displacement . in the same direction as the force. W=. Fdcos. q. SI unit for work is . Joule . (. J. ). 1 J = 1N*m (=0.7376 . You exert force on a pencil when you write. Forces are described by how strong they are and in what direction they are going. vocabulary. word!. Unbalanced Forces. unbalanced forces . - . will . change the object’s motion. You exert force on a pencil when you write. Forces are described by how strong they are and in what direction they are going. Unbalanced Forces. Unbalanced forces on an object will change the object’s motion. Nature of science: . Theories: Many phenomena can be fundamentally understood through application of the theory of conservation of energy. Over time, scientists have utilized this theory both to explain natural phenomena and, more importantly, to predict the outcome of previously unknown interactions. The concept of energy has evolved as a result of recognition of the relationship between mass and energy.. This lesson Work done as energy transfer Power as the rate of energy transfer Interpreting force/distance graphs Work In physics, work has a special meaning, different to “normal” English. Work Work, Power & Energy Work Work is the product of force and distance For a force to do work on an object, some of the force must act in the same direction as the object moves. If there is no movement, no work is done. Lesson 5.1 Work Essential Question: How do you calculate work? Which situation is an example of work? Holding a set of exercise weights up in the air Pushing your car down the street because it ran out of gas P3 Challenge– . A 62 kg crate is being pulled at constant speed across a floor by a cord that makes a 30.  incline to the horizontal. What is the coefficient of dynamic friction if the tension in the cord is 130 N? .