"How much I know about Physics": HTML5 Crossword

Across

2. The property of the body that determines the body’s acceleration under the influence of a given force (4)
4. In Physics the phenomenon in which an object changes its position over time (6)
7. The natural force that causes things to fall toward the Earth (7)
8. A vector quality that is defined as the rate at which an object changes its velocity increasing it (12)
10. The opposite of acceleration. The velocity is dropping compared to the initial one (12)
11. The speed at which something moves in one direction (8)
13. A collection of matter within a defined contiguous boundary in three-dimensional space (6)
14. The opposite of linearity (5)

Down

1. Stated facts which have been deduced and derived based on empirical observation (12)
3. The active acquisition of information from a primary source eg. Perception and recording of data via the use of scientific instruments (11)
5. It is the property of a mathematical relationship or function that can be graphically represented as a straight line (9)
6. It is defined as the motion, wherein the velocity of the body travelling in a straight line remains the same (13)
9. A unit of length that is one of the seven base SI units (5)
11. A quantity that has both magnitude and direction. It is usually represented by an arrow (6)
12. Any interaction that changes the motion of an object (5)