What materials are difficult to charge because electrons easily flow through them?
1 answer:
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Answer:
Explanation:
Generally from kinematics equations we have that
Here u is the initial velocity of the rock and the value is 0 m/s given that there was no information that it was in motion before the fall
substituting 1.43 s for t and for g we have that
=>
The negative sign show that the displacement is in the direction of the negative y-axis