Motion, Forces and Energy Crossword Puzzle

QUESTIONS LIST:

• speed: distance an object travels in a given unit of time
• net force: combination of all forces acting on the object
• momentum: product of an object's mass and velocity
• weight: force of gravity on a person/object
• force: push or pull on an object
• projectile: an object that is thrown
• motion: when one object's distance from another is changing
• inertia: tendency of an object to resist a change in motion
• second: newton's _ law - acceleration depends on an object's mass and the net force acting on the object
• velocity: speed in a given direction
• friction: force that 2 surfaces exert on each other when they rub against each other
• reference point: object that is used to determine if something is in motion
• acceleration: rate at which velocity changes
• mass: amount of matter in an object
• third: newton's _ law - for every action there is an equal but opposite reaction
• first: newton's _ law - an object at rest will stat at rest and an object in motion with stay in motion
• gravity: force that pulls objects toward each other
• newton: si unit that measures strength of force
• balanced: _ force - equal forces acting on an object in opposite directions
• air resistance: fluid friction on objects falling through the air
• unbalanced: _ force cause an object to start moving, stop moving, or change direction