Hello there,
The word 'repeatable' means, the scientific experiment is repeated in the same way, with the same methods and analysis.
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Its number A)!!
If an object has a net force acting on it, it will accelerate. The object will speed up, slow down or change direction. An unbalanced force (net force) acting on an object changes its speed and/or direction of motion. An unbalanced force is an unopposed force that causes a change in motion.
Hope this helps!! :-)
A) Pure substances, Chemical changes
Answer:
B. over the symbol.
Explanation:
vectors are represented with a symbol carrying an arrow head with also indicates direction
