<u />The correct answer is: [D]:
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"<span>cannot be divided into smaller substances by chemical means<span>" .
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An <u><em>element</em></u><u><em /> </u><em> </em>: "</span>cannot be divided into smaller substances by chemical means."
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After 2 seconds the particle will be in position

After 5 seconds the particle will be in position

So, the particle will travel

meters in 3 seconds, for an average speed of

Answer:
it wont be because the hand brake would be on