A ball is thrown straight up and reaches a maximum height in 8.33 s.
What was its initial speed? The accelera-
tion of gravity is 9.8 m/s2
Answer in units of m/s.

Determine el momento angular de un rueda de 3000g moviendose a 10m/s con un radio de giro de 400cm

This is for my 8th grade science class, i really don’t understand. can someone me? , lol.

Place several e-field sensors at a few points on different equipotential lines, and look at the relationship between the electric field and the equipotential lines. which statement is true? 1-at any point, the electric field is perpendicular to the equipotential line at that point, and it is directed toward lines of higher voltages. 2-at any point, the electric field is perpendicular to the equipotential line at that point, and it is directed toward lines of lower voltages. 3-at any point, the electric field is parallel to the equipotential line at that point.