Download Glencoe Science: Motion, Forces, and Energy, Student Edition by McGraw-Hill Education PDF

By McGraw-Hill Education

Discover the pliability to coach technological know-how your manner movement, Forces, and effort, as part of the Glencoe technological know-how 15-Book sequence, presents scholars with exact and entire insurance of forces and Newton’s legislation. The robust content material assurance integrates a variety of hands-on reports, critical-thinking possibilities, and real-world functions. The modular technique helps you to mix'n'match books to fulfill your curricula.

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Extra resources for Glencoe Science: Motion, Forces, and Energy, Student Edition

Example text

Using the law of universal gravitation, astronomers were able to explain the motions of the planets in the solar system, as well as the motions of distant stars and galaxies. What is gravity? The force of gravity exists between any two objects that have mass. Gravity always is attractive and pulls objects toward each other. A gravitational attraction exists between you and every object in the universe that has mass. However, the force of gravity depends on the mass of the objects and the distance between them.

Then as you push harder and harder, the object suddenly will start to move. When you first start to push, friction between the heavy refrigerator and the floor opposes the force you are exerting and the net force is zero. The type of friction that prevents an object from moving when a force is applied is called static friction. Static friction is caused by the attraction between the atoms on the two surfaces that are in contact. This causes the surfaces to stick or weld together where they are in contact.

Tape the metersticks next to each other, 2. 3. 4. 5. slightly farther apart than the width of the large marbles. This limits the motion of the marbles to nearly a straight line. Place a small target marble in the center of the track formed by the metersticks. Place another small marble at one end of the track. Flick the small marble toward the target marble. Describe the collision. Repeat step 2, replacing the two small marbles with the two large marbles. Repeat step 2, replacing the small shooter marble with a large marble.

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