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?

Answer 1

Step-by-step explanation:

given,

speed limit on the highway is roughly = 100 km/hr

a) to calculate limit in meter per second

1 km/h =
`(1000\ m)/(3600 s)`

100 km/h =
`100 * (10)/(36)`

= 27.78 m/s

b) to calculate limit in meter per second

1 km = 0.6213 mile

100 km/hr = 100 × 0.6213 mi/hr

= 62.13 mi/hr