Across
- 5. a body's relative mass or the quantity of matter contained by it, giving rise to a downward force; the heaviness of a person or thing.
- 8. the extent or amount of space between two things, points, lines, etc.
- 9. the rate at which an object's position changes, measured in meters per second.
- 11. a property of matter by which it continues in its existing state of rest or uniform motion in a straight line, unless that state is changed by an external force.
- 12. a measure of how effectively a system or device converts input energy into useful output energy, often expressed as a percentage.
- 14. the rate of change of a scalar field with respect to distance, in the direction of the maximum change.
- 15. a state where an object's motion (both linear and rotational) remains constant over time.
- 16. the net effect of multiple forces acting on an object, represented as a single force.
- 17. the speed in combination with the direction of motion of an object.
- 18. the quantity determining the energy of mass in a gravitational field or of charge in an electric field.
Down
- 1. the rate of change of velocity per unit of time.
- 2. an action that changes or maintains the motion of a body or object
- 3. of or relating to the motion of material bodies and the forces and energy associated therewith.
- 4. the change in position of an object.
- 6. the force that attracts a body towards the centre of the earth, or towards any other physical body having mass.
- 7. the quantity of matter within a given object.
- 10. the capacity to do work, meaning the ability to exert a force and cause displacement.
- 13. the principle by which the total value of a physical quantity or parameter (such as energy, mass, linear or angular momentum) remains constant in a system which is not subject to external influence.