ALIDIO, ANGELA PATRICIA G.
P r e f A c e Impulse is defined as the integral of a force acting on an object, with respect to time. This means that impulse contains the product of force and time. Impulse changes the momentum of an object. As a result, a large force applied for a short period of time can produce the same momentum change as a small force applied for a long period of time. An impulse can act on an object to change either its linear momentum , angular momentum , or both. In many real life problems involving impulse and momentum, the impulse acting on a body consists of a large force acting for a very short period of time – for example, a hammer strike, or a collision between two bodies. O b j e c t I v e • To understand the interactions from a new perspective of impulse and momentum. • To understand and use the impulse-momentum theorem • Describe changes in momentum in terms of force and time. • Identify examples of change in the momentum of an object. TABLE OF CONTENTS P r e f a c e I. objective a. Pre-test b,. What you need to know. II. Activities A. Activity B. Activity 2 C. Activity 3 What have I learned? III. Building Vocabulary and Other Exercises A.Word Parts B. Word Cryptogram C. Finding Out More IV. Checking Concept V. Post-Test
PRE-TEST 1. In a soccer game a player throws the ball in to play from the side line. She throws it in using her hands over her head. the ball starts from rest. The ball has a force acting in it for 0.10 seconds. On the way down the ball hits a player in the head at the same height it was thrown from. It makes contact for 0.005 seconds and comes to a rest upon contact. Which impulse is greater? A. The throw's impulse is greater.B. The head impact's impulse is greater.C. The 2 impulses are equal.D. There is not enough information to answer the question. 2. A rocket weighing 0.3 Newtons exerts an upward thrusting force of 8 Newtons. The rocket motor fires for 0.16 seconds. Which impulse is greater during the rocket's engine firing, gravity's or the rocket motor's impulse? 3. Which has the greatest impulse?
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