A car is traveling at a speed of 81 kilometers per hour. What is the car's speed in meters per second? How many meters will the car travel in 20 seconds? Do not round your answers.

450meters

Step-by-step explanation:

Given data

Speed = 81km per hour

Let us convert to meter per seconds

1 km= 1000m

1 hour=3600 seconds

= 1000/3600= 5/18 m/s

=81*5/18

=405/18

=22.5 m/s

Hence the distance traveled in 20 seconds is

distance= speed*time

distance= 22.5*20

distance= 450 meters

Hence the distance is 450meters

4a. is 3 miles every hour

4b. is 1/3 of an hour per mile

step-by-step explanation:

answer: he is 272195

step-by-step explanation: all you have to do is multiple 3535 and 77 and it equals 272195