The acceleration of a certain body is 15 m / s2, this means that :?
1) travels a distance of 15 m in 1 s.
2) it has a constant speed of 15 m / s.
3) for every second of movement it travels 15 m away.
4) its speed changes by 15 m / s for each second of movement.
5) travels a distance of 15 m for every second squared of movement.

When many atoms are split in a chain reaction, a large explosion occurs. this is an example of what type of energy conservation

The two metal spheres in the figure are connected by a metal wire with w switch in the middle. initially the switch is open. sphere 1, with the larger radius, i'd given a positive charge. sphere 2, with the smaller radius, is neutral. then the switch is closed. afterward, sphere 1 has charge q1, is at potential v1 and the electric field strength at its surface is e1. the values for sphere 2 are q2, v2, and e2. a. is v1 < ,> , or = to v2? explain. b. is q2 < , > , or = explain? c. is e1 < ,> ,or = to e2? explain?

The researcher who studied the ability of cats to learn to escape from puzzle boxes was