Consider the following equations of motion. v = v0 + at Δx = v0t + 1 2 at2 v2 = v02 + 2aΔx (a) Can the equations above be used in a situation where the acceleration varies with time?

What is the measurement of how fast an object moves relative to a reference point?

I'm thinking it's 2 you are asked to explain the earth's magnetic field. which is the best reply? 1. the earth's magnetic south is similar to the north pole of a magnet. 2. the earth's core has a strong magnetic charge similar to the south pole of a magnet. 3. the earth's geomagnetic south is similar to the south pole of a magnet. 4. the earth's magnetic charge is not centered at either pole; it varies based on location.

A10 kg box initially at rest is pulled 18 meters across a horizontal, frictionless surface by a 40 n force. what is the block’s final velocity over the 18 meters?