Physics terms!

1. A large body of matter with no definite shape.
5. The strength and vitality required for sustained physical or mental activity.
7. Strength or energy as an attribute of physical action or movement.
9. A quantity, which needs both magnitude and direction to describe it.
10. The unit of force, equal to the force that will produce an acceleration of 1m/s in a body of mass kg.
13. The motion of a body under the effect of gravity alone.
15. The mass of a substance per unit volume.

2. The rate of change of velocity with respect to time.
3. The rate of change of the position of an object.
4. Relating to or resulting from motion.
6. The length from your house to school.
8. The gravitational attraction at the surface of a planet or other celestial body.
9. At right angles to a horizontal plane; in a direction, or having an alignment, such that the top is directly above the bottom.
11. There is a displacement of the point of application in the direction of the force.
12. The property of a body to resist a change in its state of rest or of uniform motion.
14. The force with which a body is attracted towards the center of the earth. The weight of a body of mass m is given by mg, where g is the acceleration due to gravity.