Question

A car is driving at 100 kilometers per hour. How far does it travel in 2 seconds?

Answer 1

To find the distance traveled by the car in 2 seconds, convert the speed from kilometers per hour to meters per second and multiply it by the time.

Step-by-step explanation:

To find the distance traveled by the car in 2 seconds, we need to convert the given speed from kilometers per hour to meters per second. Since there are 1000 meters in a kilometer and 3600 seconds in an hour, we can use the following conversion:

Speed in meters per second = Speed in kilometers per hour × 1000 ÷ 3600

By substituting the given speed of 100 kilometers per hour, we have:

Speed in meters per second = 100 × 1000 ÷ 3600 = 27.78 m/s

Now, we can use the formula:

Distance = Speed × Time

Substituting the calculated speed of 27.78 m/s and the given time of 2 seconds, we get:

Distance = 27.78 × 2 = 55.56 meters

Answer 2

`(1)/(18)\ km` or
`(500)/(9)\ m`

Step-by-step explanation:

Remember that

1 hour=3,600 seconds

so

by using proportion

`(100)/(3,600)(km)/(sec) =(x)/(2)(km)/(sec) \\ \\x=2*100/3,600\\ \\x=(1)/(18)\ km`

Convert to meters

`(1,000)*((1)/(18))=(500)/(9)\ m`