Car b is following car a as they are moving along a straight path with va=40 mph and vb=45 mph. at the moment when the distance between the cars is 45 ft brakes are applied simultaneously in both cars. car a decelerates with aa=−22 ft/s2 and car b with ab=−20 ft/s2. what is the distance between the cars when they are both stopped?

Need in all of themmm only answer if you know plsssss

Calculate the mass of an object that has a momentum of 100kg x m/sec and velocity of 4 m/sec

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.