An object is projected straight upward with an initial speed of 25.0 m/s
1 answer:
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Answer:
75.71 m/s
Explanation:
From equation of motion, acceleration is given by
where v is the final velocity, u is the initial velocity and t is time taken.
Making v the subject of the above formula
v=at+u
Substituting 6.7 s for time, t and 11.3 for a and taking u as zero since it starts from rest
v=11.3*6.7=75.71 m/s
To solve this problem we will apply the concept of voltage given by Coulomb's laws. From there we will define the charges and the distance, and we will obtain the total value of the potential difference in the system.
The length of diagonal is given as
The distance of the center of the square from each of the corners is
The potential electric at the center due to each cornet charge is
The total electric potential at the center of the given square is
Al the charges are equal, and the distance are equal to a, then
Therefore the correct option is E.