The temperature at 5 pm is 20f the temperature at 10pm is -5f. the temperature fell how many degrees

To find how much the temperature fell we must find the difference of both numbers and to do this we subtract them;

20 - (-5) = 25 degrees

54 kilometers per hour

step-by-step explanation:

according to rules:

1 km = 1000 meter

which means that 1 meter = 1/1000 km

1 hour = 3600 second [ as 1 hour = 60 min = 60 *60 seconds ]

which means that 1 second = 1/3600 hour

therefore, 1 kilometer/hour =

thus to convert 15 meter per second to kilometer per hour, we multiply 15 to 3.6 kilometer/hour.

15 meter/second=   which is the required answer.

it would rotate about 180 degrees.