jetsons flying car

Question

If Scoobie could drive a Jetson's flying car at a constant speed of 180.0 km/hr across oceans and space, approximately how long would Scoobie take to drive around Earth's equator in days? Use 6200 km for the radius of the Earth.

Answer 1

So this question has two steps. Your first step is to find the circumference of the earth, with the numbers given. You can do that by putting the radius of 6200 kilometres into the 2πr equation. That should get you a circumference of 12400π, or about 38,955.75 kilometres.

Next, you can use the rate the Jetson's car is going (180km/h) and divide the 38,955.75 by it to see how many hours it would take at that constant speed.

38,955.75 / 180 = 216.42 hours

Then you can divide that by 24 to get how many days.

216.42 / 24 = 9 days