An astronaut drops a rock into a crater on the moon. the distance, d(t), in meters, the rock travels after t seconds can be model by the function d(t) =0.8t^2. what is the average speed, in meters per second, of the rock between 5 and 10 seconds after it was dropped?

Anew landowner is interested in constructing a fence around the perimeter of her property. her property is 1,080√30 feet wide and 500√20 feet long. what is the perimeter of the property? (recall that the perimeter is the sum of each side of a shape or boundary). a 1,580√40 feet b. 5,320√5 feet c. 3,160√20 feet d. 10,640√5 feet