WEEK 1 LAWS OF MOTION.pdf

SCIENCE 8 Laws of Motion Lesson #1 Date: August 5-10  SCIENCE 8 “Almost everything that we see in our daily life is tied to Newton’s Laws. These laws exactly tells us how things move around us and how they sit still” 21-Aug-24 Laws of Mo...

SCIENCE 8 Laws of Motion Lesson #1 Date: August 5-10  SCIENCE 8 “Almost everything that we see in our daily life is tied to Newton’s Laws. These laws exactly tells us how things move around us and how they sit still” 21-Aug-24 Laws of Motion 2  SCIENCE 8 Force described as a push or pull acting upon an object as a result of its interaction with another object (Madriaga, Valdoz, Aquino, & Castillo, 2017). 21-Aug-24 Laws of Motion 3  SCIENCE 8 Net force Defined as the sum of all the forces acting on an object. https://flexbooks.ck12.org/ 21-Aug-24 Laws of Motion 4  SCIENCE 8 Balanced Force vs. Unbalanced Force Balanced Force Unbalanced Force The net force is zero Is a non zero net force. when the two forces are equal and they act in opposite direction. 21-Aug-24 Lesson Title 5  SCIENCE 8 Add text or question here. 21-Aug-24 Lesson Title 6  SCIENCE 8 MOTION is caused by unbalanced forces. 21-Aug-24 Lesson Title 7  SCIENCE 8 WHAT CHANGES CAN FORCE DO TO MOTION? Force can make an object move starting from a rest position. Force can make a moving object stop. Force can change the speed and direction of a moving object. 21-Aug-24 Lesson Title 8  SCIENCE 8 NEWTON’S THREE LAWS OF MOTION 21-Aug-24 Lesson Title 9  SCIENCE 8 21-Aug-24 Lesson Title 10  SCIENCE 8 Law of Inertia Inertia - is the tendency of an object to resist change in its state of motion (Madriaga, Valdoz, Aquino, & Castillo, 2017). 21-Aug-24 Lesson Title 11  SCIENCE 8 This law states that a body at rest remains at rest, and a body already in motion remains in motion with constant velocity in the absence of unbalanced force. 21-Aug-24 Lesson Title 12  SCIENCE 8 21-Aug-24 Lesson Title 13  SCIENCE 8 LAW OF INERTIA Mass is directly related to Inertia. m∝ Inertia 21-Aug-24 Lesson Title 14  SCIENCE 8 LAW OF INERTIA Always remember that: Massive objects = Greater Inertia Smaller objects = Lesser Inertia 21-Aug-24 Lesson Title 15  SCIENCE 8 Which has more inertia? 21-Aug-24 Lesson Title 16  SCIENCE 8 LAW OF ACCELERATION : The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object. 21-Aug-24 Lesson Title 17  SCIENCE 8 Simply, the acceleration of an object depends on the force acting on it and the mass of the object. 21-Aug-24 Lesson Title 18  SCIENCE 8 LAW OF ACCELERATION : Greater mass = Greater amount of force needed to accelerate the object 21-Aug-24 Lesson Title 19  SCIENCE 8 Which needs to apply more force? 21-Aug-24 Lesson Title 20  SCIENCE 8 Which needs to apply more force? 21-Aug-24 Lesson Title 21  SCIENCE 8 LAW OF ACCELERATION a ∝ Fnet 21-Aug-24 Lesson Title 22  SCIENCE 8 21-Aug-24 Lesson Title 23  SCIENCE 8 LAW OF ACCELERATION 21-Aug-24 Lesson Title 24  SCIENCE 8 Sample Problem # 1 1. A 3.5 kg papaya is pushed across a table. If the acceleration of the papaya 2 is 2.2 m/s to the left, what is the net external force exerted on the papaya? 21-Aug-24 Lesson Title 25  SCIENCE 8 Sample Problem # 2 A constant net force of 200 N is exerted to accelerate a cart from rest to a velocity of 40 m/s in 10s. What is the mass of the cart? 21-Aug-24 Lesson Title 26  SCIENCE 8 Sample Problem # 2 A 0.050 kg tennis ball approaches a racket at an initial velocity of 25m/s. If it is in contact with the racket’s string for 0.005s then rebound t 25m/s, What is the average contact force between ball and racket? 21-Aug-24 Lesson Title 27  SCIENCE 8 LAW OF INTERACTION: The third law of motion explains interaction of an action force and the reaction force which are equal in magnitude but acting in opposite direction. 21-Aug-24 Lesson Title 28  SCIENCE 8 21-Aug-24 Lesson Title 29  SCIENCE 8 21-Aug-24 Lesson Title 30  SCIENCE 8 Centripetal Force (Fc) a net force that acts on an object to keep it moving along a circular path. http://hyperphysics.phy-astr.gsu.edu/hbase/cf.html 21-Aug-24 Lesson Title 31  SCIENCE 8 Centripetal Acceleration (Ac) the acceleration of a body traversing a circular path. https://study.com/academy/lesson/centripetal-acceleration-definition-formula-example. html 21-Aug-24 Lesson Title 32  SCIENCE 8 Bibliography : Madriaga, P. E., Valdoz, M. P., Aquino, M. A., & Apolinario, N. A. (2017). Science Links 7: Worktext for Scientific and Technological Literacy. Sampaloc, Manila: Rex Bookstore, Inc. Zitzewitz, P. W., Elliott, T., Haase, D. G., Harper, K. A., Herzog, M. R., Nelson, J.,... Zorn, M. K. (2009). Physics Principles and Problems. United States of America. 2 3: Glencoe/McGraw- Hill.