Asports car is travelling at a constant velocity v = 5.00 m/s. the driver steps on the gas, and the car accelerates forward. after 10.0 seconds, the driver stops accelerating and maintains a constant velocity v = 25.0 m/s. what was the car’s acceleration?

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.