Okay. To find the speed in meters, do 75 * 1,000. because 1,000 meters = 1 kilometer. 75 * 1,000 is 75,000. The speed is 75,000 meters an hour. But, it asks for meters per second and there are 3,600 seconds in one hour. To find this, we have to do division. 75,000/3,600 is 20.8 when rounded to the nearest tenth. The car goes about 20.8 meters per second.