Skip to Content Go to sign in Skip to Primary Navigation Skip to Secondary Navigation Skip to Page Navigation Skip to Header Navigation Skip to Footer Navigation Read more about accessability options and our navigation

Physics Classroom is making strides to make our site accessible to everyone. Our site contains 6 navigation areas. The Primary, Secondary, and Page Level navigations have a screen reader version of their nav structure that allows using the left and right keys to navigate sibling navigation items, and up or down keys to navigate parent or child navigation items. The others can be navigated using tabs. The Primary Navigation handles the first 2 levels of site pages. The Secondary (which is not always available) handles the 3rd and 4th level of structure. The Page level navigation allows you to navigate the current page's headings quickly. The Header Navigation contains the Light/Dark Mode toggle, Search, Notifications and account login. The Breadcrumb Navigation contains the breadcrumb of the current page. If the current page has a breadcrumb, you can get to it by skipping to the content and tabbing in reverse (shift plus tab). The Footer Navigation contains links such as Privacy, Contact, about and terms. Some resources contain an Audio Player that can be activated by holding down the T key for 3 seconds, and then using K to pause and resume. While not every area of Physics Classroom is usable purely from keyboard and screen reader, we are committed to continue work on making this possible. If you have questions or need additional help, please use this link to contact us.

Return to screen reader navigation
Home Minds On Newton's Laws Mission NL6 Mass vs. Weight Help Help 1

Mission NL6 Mass vs. Weight

The Question

Mass is expressed in units of _____ and weight is expressed in units of ...

Define Help

Definition of Mass:
The mass of an object refers to the amount of matter or stuff present in that object. It is a measure of the amount of inertia that an object possesses. The standard metric unit of mass is the kilogram (abbreviated kg); other units include grams (g), milligrams (mg), and slugs (British system).

Define Help

Definition of Weight:
The weight of an object refers to the force with which gravity attracts that object to Earth (or to any other object or large body that the object is on or near). The weight of an object varies with its location since it is a quantity dependent upon the gravitational field strength. Being a force, the standard metric unit of weight is the Newton (abbreviated N); another commonly used unit is the pound (British system).

Hot Link