physical science Crossword puzzle

the moving of something from its place or position
an amount of space between two things or people
the speed of something in a given direction
the rate at which someone or something is able to move or operate
a vehicle's capacity to gain speed within a short time
strength or energy as an attribute of physical action or movement
two forces acting in opposite directions on an object, and equal in size
balanced forces act on an object at rest, the object will not move
not moving or not intended to be moved
cease work or movement in order to relax, refresh oneself, or recover strength
the resistance that one surface or object encounters when moving over another
a tendency to do nothing or to remain unchanged
a coherent, typically large body of matter with no definite shape
the force that attracts a body toward the center of the earth, or toward any other physical body having mass
a disturbance that travels through a medium as a longitudinal wave
a reflected sound wave
a unit used to compare the loudness of different sounds
the echos of a sound that are heard after the sound source stops producing sound waves
how much matter or mass there is in a given amount of space or volume
the change in frequency of a wave as its source moves in relation to an observer