Answer:
for the force that sent the person forward, there is an equal force pushing back on the skateboard
The answer is particle accelerators.
Answer: Manholes are usually round, primarily because roundness is the best shape to resist the compression of the earth; covers are round because they are easier to manufacture than square or rectangular shapes, they are easier to move by rolling, and they can't fall into the opening.
Explanation:
Answer:

Explanation:
because it is products / reactants
Hope this helps:)
Answer:
The answer is B
Explanation:
B is your answer hopes this helps you