How long does it take a plane, traveling at a constant speed of 198 m/s, to fly once around a circle whose radius is 4280 m?

What happens to light waves from a star as the star moves away from earth?

Identify the type of synthetic material used in each object

Standing side by side ,you and a friend step off a bridge at different times and fall for 1.6s to the water below.your friend goes first,and you follow after he has dropped a distance of 2.0m.when your friend hits the water,is the seperation between the two of you 2.0m or more than 2.0m? verify your answer with a calculation.