Question

A mile is equivalent to 1.6 km. When you are driving at 60 miles per hour, what is your speed in meters per second?

Answer 1

FIrst, just write down what we know :)

1. 1 mile = 1.6klm
2. There are 3600 seconds in an hr (60s x 60mins = 3600).

Now to get to meters per second (m/s) we need to first work out meters per hr (simply convert miles to klm and then multiply by 1000).

60 x 1.6 = 96 klm/hr x 1000 = 96,000 meters/hr

Now we know this, we can simply divide the meters per hr by how many seconds there are in 1hr to get meters per second:

96000 / 3600 = 26.67m/s