The speed limit on some interstate highways is roughly 100 km/h. (a) What is this in meters per second? (b) How many miles per hour is this?
Question
The speed limit on some interstate highways is roughly 100 km/h. (a) What is this in meters per second? (b) How many miles per hour is this?
Solution
(a) To convert from kilometers per hour to meters per second, you use the conversion factor 1 km = 1000 m and 1 hour = 3600 seconds. So,
100 km/h = 100 * (1000 m / 1 km) * (1 hour / 3600 seconds) = 27.78 m/s
(b) To convert from kilometers per hour to miles per hour, you use the conversion factor 1 km = 0.621371 miles. So,
100 km/h = 100 * 0.621371 miles/km = 62.1371 mph
So, 100 km/h is approximately 27.78 m/s and 62.14 mph.
Similar Questions
While driving down the highway you notice that your speedometer reads 50 miles/hr and 80 km/hr. Which is faster, one mile per hour or one kilometer per hour?Group of answer choicesone mile per hourone kilometer per hourneither, they are equal quantitiesanswer cannot be determined from the information given
A car is traveling at a speed of 33 m/s33 m/s . (a) What is its speed in kilometers per hour? (b) Is it exceeding the 90 km/h90 km/h speed limit?
A car running at a speed of 140 km/hr reached its destination in 2 hours. If the car wants to reach at its destination in 1 hour, at what speed it needs to travel?A)100kmphB)300kmphC)280kmphD)190kmph
If a vehicle is going 45 mph, how many feet does it travel in one second?
A car travels 50 meters in two seconds. How fast is it moving?
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.