PPT-Friction and Gravity

EQ What changes an objects motion Friction and Gravity What happens when you jump on a sled on the side of a snowcovered hill What happens at the bottom of the hill Friction and Gravity Why does the sleds motion change on the side of the hill and then again at the bottom. Ms. King desk. BOARD. BLACK . DESKS ONLY:. Jamya, Cooper, Breonna, Matthew, . Sapphira. , Justice, Christian. Kenneth. Torien. Donovan. Davon B. Destiney H. Dearell. Terronda. Kiana. Chiarrah. Tayia. Chapter Introduction. Lesson 1. Gravity and Friction. Lesson 2. Newton’s . First Law. Lesson 3. . Newton’s . Second Law. Lesson 4. Newton’s Third Law. Chapter Wrap-Up. Chapter Introduction. Wed., Feb. 3, 3 – 5 PM. in Welch 2.224 . The Earth and its oceans both fall toward the Moon because the Moon pulls. on . the Earth gravitationally. . Important: . The Earth falls freely through space. . Introduction. Rescue personnel often think that the physical laws of the universe do not apply when there is "an emergency.“ These LAWS are applied when we are:. Lifting. Lowering. Moving . Stabilizing. is a pull or a push.. Force. The unit of measure for force is . Newton (N). . . . . English scientist.. . (1643 – 1727) . 5.6D . Design . an experiment that tests the effect of force on an object.. . STAAR 2013 #41; RC2; Supporting; B. 1. . A student uses a spring scale to pull a 50-gram block horizontally across a wood desk. Then the student pulls the block the same distance across surfaces of carpet, sandpaper, and glass.. A chair will be placed in the middle of the floor. Teacher question: Are there any forces acting on this chair? . Invite . a student to gently push the chair a short distance across the floor. Ask the same teacher question . Velocity (v) . is the rate at which an object is changing position per unit of time with a direction.. Direction is: . north, south, east, west, right, left, up, down.. Velocity changes. when one or both of the following change: . EQ: What changes an object’s motion?. Friction and Gravity. What happens when you jump on a sled on the side of a snow-covered hill?. What happens at the bottom of the hill?. Friction and Gravity. Why does the sled’s motion change on the side of the hill and then again at the bottom?. What causes an object to start moving, stop moving, or change direction?. UNBANLANCED FORCE. What is a force?. A push or pull. A force is described by strength and direction. The strength of a force is measured in the Newton (N). Frame of reference- . a system of objects that are not moving with respect to another.. Also called a . Point of Reference. - Describing and Measuring Motion. Describing Motion. Whether or not an object is in motion depends on the reference point you choose. Friction is the resistance to the sliding, rolling, or flowing motion of an object due to its contact with another object. . When a moving object comes in contact with another object, friction is the opposing force that slows or stops the moving object. . 8. th. grade physical science. What is the first step a scientist usually takes to solve a scientific problem?. Conduct research. Form a hypothesis. Gather information. State the problem. If the conclusions drawn from an experiment support the hypothesis, a scientist should then. A. nswer 9/7/16. A hiker’s velocity begins at 1.8 m/s uphill and changes to 1.5 m/s uphill. How do you know that the hiker has a negative acceleration?. 4 Types of Friction. The 4 types of friction are: .