Volume involves how much space an object occupies MassA Measure of Inertia

# Volume involves how much space an object occupies

This preview shows page 14 - 27 out of 61 pages.

Volume involves how much space an object occupies. Mass—A Measure of Inertia CHECK YOUR UNDERSTANDING The concept of inertia mostly involves A. mass. B. weight. C. volume. D. density. Mass—A Measure of Inertia CHECK YOUR ANSWER The concept of inertia mostly involves A. mass. B. weight. C. volume. D. density. Comment: Anybody get this wrong? Check the title of this slide! Mass—A Measure of Inertia Standard unit of measurement for mass: the kilogram One Kilogram (kg) of any material on Earth's surface weighs 10 newtons. Away from the Earth, as on the Moon or other small bodies, 1 kg of material weighs less than 10 newtons. Mass—A Measure of Inertia CHECK YOUR UNDERSTANDING When the string is pulled down slowly, the top string breaks. This best illustrates the A. weight of the ball. B. mass of the ball. C. volume of the ball. D. density of the ball. Mass—A Measure of Inertia CHECK YOUR ANSWER When the string is pulled down slowly, the top string breaks. This best illustrates the A. weight of the ball. B. mass of the ball. C. volume of the ball. D. density of the ball. Explanation: The tension in the top string is the pulling tension plus the weight of the ball, both of which break the top string. Mass—A Measure of Inertia CHECK YOUR UNDERSTANDING When the string is pulled down quickly, the bottom string breaks. This best illustrates the A. weight of the ball. B. mass of the ball. C. volume of the ball. D. density of the ball. Mass—A Measure of Inertia CHECK YOUR ANSWER When the string is pulled down quickly, the bottom string breaks. This best illustrates the A. weight of the ball. B. mass of the ball. C. volume of the ball. D. density of the ball. Explanation: It is the "laziness" of the ball that keeps it at rest, resulting in the breaking of the bottom string. Measure of compactness Density is the measure of how much mass occupies a given space. – Equation for density: Density = in grams per cubic centimeter or kilograms per cubic meter mass volume Mass—A Measure of Inertia Mass—A Measure of Inertia CHECK YOUR UNDERSTANDING The density of 1 kilogram of iron is A. less on the Moon. B. the same on the Moon. C. greater on the Moon. D. all of the above Mass—A Measure of Inertia CHECK YOUR ANSWER The density of 1 kilogram of iron is A. less on the Moon. B. the same on the Moon. C. greater on the Moon. D. all of the above Explanation: Both the mass and the volume of 1 kilogram of iron are the same everywhere, so the density is the same everywhere. Net Force Force is simply a push or a pull. Net force is a combination of all the forces that act on an object. It is the net force that changes an object's state of motion. Net Force CHECK YOUR UNDERSTANDING A cart is pushed to the right with a force of 15 N while being pulled to the left with a force of 20 N.  #### You've reached the end of your free preview.

Want to read all 61 pages?

• Spring '14
• AnnM.Robinson
• • •  