Answer:
the answer should be the third statement
0.022 has 2 digits because you would count from the left starting with the first nonzero number
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➷ It would be 'when they have like charges.'
'Like charges' means the same charge. For example, two positive charged objects have like charges.
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Answer:
The height of the cliff is 90.60 meters.
Explanation:
It is given that,
Initial horizontal speed of the stone, u = 10 m/s
Initial vertical speed of the stone, u' = 0 (as there is no motion in vertical direction)
The time taken by the stone from the top of the cliff to the bottom to be 4.3 s, t = 4.3 s
Let h is the height of the cliff. Using the second equation of motion in vertical direction to find it. It is given by :



h = 90.60 meters
So, the height of the cliff is 90.60 meters. Hence, this is the required solution.