An object ‘A’ of mass 3.0 kg moving with velocity 21 m/s, collides inelastically with another object ‘B’ of mass 5.0 kg moving with velocity 8.0 m/s.

After collision object ‘B’ starts to move with velocity 2.0 m/s,

a) Find the velocity of an object ‘A’ after collision?

b) Calculate KE before and after collision?

c) Is KE conserved?

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.