Saturday, 30 August 2014

SYSTEM IN MOTION TERMINOLOGY


SYSTEM IN MOTION

Select the correct term to complete the sentences.

centripetal force
range
center of gravity
rotates
displacement
parabola
revolves
satellite
projectile
trajectory
center of mass
angular speed
law of universal gravitation

1. A _____ vector shows an object’s change in position.
2. The path of a projectile is its _____.
3. A _____ is an object that moves through the air only affected by the
force of gravity.
4. The mathematical shape of a projectile’s trajectory is a _____.
5. The horizontal distance a projectile travels is its _____.
6. An object _____ when it moves in a circle around an external axis.
7. A wheel ____ about an axis in its center.
8. _____ is the measure of how fast an object rotates or revolves.
9. An inward _____ is needed to move an object in a circle.
10. The _____ describes the relationship between mass, distance, and
gravitational force.
11. An object that orbits the earth is a _____.
12. An object’s _____ is the average position of all the particles that
make up its mass.
13. You can balance an object on your finger if you support it at its
_____.