Answer:
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How do catalysts speed up reactions ?
by reducing the amount of energy required for the reaction to occur. other factors such as <span>catalysts' ability to speed a process are temperature, concentration </span>
The answer is 0m because at point 8s the displacement is at zero m for example at 3s the displacement is at 8m
Answer:
2292W
Explanation:
Use the formula for energy first:

Where E = Energy || D = Distance || M = Mass.
Solve that equation:
E = 5 * 5500 ==> 27500J
To find power, divide energy per time:
27500J / 12s =~ 2292W
Did it in a rush, any problems message me