Question

A dolphin travels a distance 20 miles up the coastline in 153 minutes.If 1 mile is equal to 1609 meters,then what is the dolphins average speed in meters/seconds rounded to the nearest tenth?

Answer 1

The dolphin's average speed in meters/seconds is 3.51 meters/second (rounded to the nearest tenth).

Step-by-step explanation:

To find the dolphin's average speed in meters/seconds, we need to convert the given distance from miles to meters and the given time from minutes to seconds. We know that 1 mile is equal to 1609 meters, so the dolphin traveled 20 miles x 1609 meters/mile = 32,180 meters. We also know that 1 minute is equal to 60 seconds, so the time taken by the dolphin is 153 minutes x 60 seconds/minute = 9,180 seconds. Therefore, the dolphin's average speed in meters/seconds is 32,180 meters / 9,180 seconds = 3.51 meters/second (rounded to the nearest tenth).

Answer 2

The dolphins average speed is 3.51
`(meters)/(seconds)`

Step-by-step explanation:

First of all, the following rules of three should be applied:

• If 1 mile is equal to 1609 meters, 20 miles are equal to how many meters?

`distance=(20 miles*1609 meters)/(1 mile)`

distance=32,180 meters

• If 1 minute is equal to 60 seconds, 153 minutes is equal to how many seconds?

`time=(153 minutes*60 seconds)/(1 minute)`

time= 9,180 seconds

Speed ​​is a physical quantity that expresses the relationship between the space traveled by an object and the time used for it. That is, speed implies the change of position of an object in space within a certain amount of time and is calculated as:

`speed=(distance)/(time)`

So in this case the velocity is calculated as:

`speed=(32,180 meters)/(9,180 seconds)`

Solving, you get:

Speed= 3.51
`(meters)/(seconds)`

The dolphins average speed is 3.51
`(meters)/(seconds)`