In order to catch a ball, a baseball player naturally moves his or her hand backward in the direction of the ball's motion once the ball contacts the hand. Thus, rockets indeed can and do accelerate in outer space.ġ1. ) and the gases push the rocket forwards (or leftwards, or rightwards, or. The rocket's thrusters push these gases backwards (or rightwards, or leftwards, or. The combustion of rocket fuels produces gaseous products. Rockets produce their own gas by burning fuels. It does not matter that there is no air outside of the rocket. Rockets accelerate in outer space by means of Newton's third law of motion. nonsense! Rockets do accelerate in outer space. It is NOT possible for a rocket to accelerate in outer space because _. The lower mass object always receives the greater velocity change and acceleration.ġ0. Only the acceleration and the velocity change can differ for the two colliding objects. Each object experiences the same force (Newton's third law) for the same amount of time, leading to the same impulse, and subsequently the same momentum change. In any collision, there are always four quantities which are the same for both objects involved in the collision. impulse on both the block and the expert's hand have the same magnitude.force on both the block and the expert's hand have the same magnitude.time of impact on both the block and the expert's hand is the same.During the collision between her hand and the block, the _. During a talent show, she executes a swift blow to a cement block and breaks it with her bare hand. Thus, for the same collision time, bouncing involves a greater velocity change, a greater momentum change, and therefore a greater impulse.ĩ. If the ball bounces, then there is an additional velocity change sending the ball back upwards opposite the original direction. This decrease in velocity constitutes the first portion of the velocity change. Upon collision with the ground, the velocity will have to be reduced to zero - that is, the ball will cease moving downwards. Since being dropped from the same height, the balls will be moving with the same pre-collision velocity (assuming negligible air resistance). For the same collision time, impulses are smaller when the most bouncing take place. TRUE or FALSE: A ball is dropped from the same height upon various flat surfaces. So for the same speed, a doubling of mass leads to a doubling of momentum.Ĩ. Momentum is directly related to the mass of the object. If it moves at the same speed but has twice as much mass, its momentum is _. A truck driving along a highway road has a large quantity of momentum. It matters not whether the object is of large mass or small mass, moving with constant speed or accelerating if the object is MOVING, then it has momentum!ħ. An object has momentum if it has its mass in motion. Momentum can be thought of as mass in motion. The high school building rests in the middle of town. A Yugo (a compact car) is moving with a constant speed.ĭ. A small flea walking with constant speed across Fido's back.Į. A UPS truck is stopped in front of the school building.Ĭ. An electron is orbiting the nucleus of an atom.ī. Which of the following objects have momentum? Include all that apply.Ī. Momentum and Collisions - Home || Printable Version || Questions with LinksĪnswers to Questions: All || #1-5 || #6-36 || #37-56 || 57-72Ħ. So, what are you waiting for? Start your journey towards positive change and personal growth with the Daily Habit Tracker Journal for Women.The Review Session » Momentum and Collisions » Answers Q#6-36 Momentum and Collisions Review Whether you're a working professional, a stay-at-home mom, or a student, this journal will help you prioritize your goals and make progress towards them every day. This journal is perfect for busy women who want to make positive changes in their lives. By committing to this journal, you'll build the momentum and confidence to achieve anything you set your mind to. The Daily Habit Tracker Journal for Women is not just a journal, but a powerful tool to help you develop the discipline and habits you need to succeed. Whether you want to improve your health, increase your productivity, or work on personal development, this journal will provide you with the structure and guidance you need to succeed. This journal is designed to help you build positive habits, track your progress, and achieve your goals. Are you tired of feeling like you're not making progress towards your goals? Do you wish you could develop positive habits that stick and transform your life? The Daily Habit Tracker Journal for Women is here to help!
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