Question

A plane could fly at an average speed of 694 m/s. Calculate how long it would take the plane to fly around the world (which is `4.00 xx 10^7\ "m"`)?

Answer 1

`"16 hours"`

Explanation:

Solve it using the formula

`"Speed" = "Distance"/"Time"`

`"t" = "Distance"/"Speed"`

`color(white)("t") = (4.00 × 10^7\ "m")/"694 m/s"`

`color(white)("t") = 5.76 × 10^4\ "s"`

`color(white)("t") = 5.76 × 10^4\ cancel"s" × "1 hr"/(3600 cancel"s")`

`color(white)("t") = 16\ "hr"`