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It can be important to know about the velocity of an object , not just its speed, because
velocity also tells direction
Newtons second law of motion states the relationship of mass ,acceleration,and force. it says that
force equals acceleration divided by mass
A system of measurement based on multiples of ten and on established measures of mass,length, and time
Internation system of units
The overall rate at which an object moves ; calculated by dividing the total distance an object travelsby the total time .
A unit of measure that equals the force required to accelerate1 kilogram of mass at 1 meter per second
The rule that in the absence of outside forces the total momentum of objects that interact does not change.
Law of conversation
The overall force on an object when all the idividual forces acting on it are added together.
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