If a survey boat travels at a speed of 10 knots and measures soundings at intervals of 10 seconds, what is the interval of soundings in the water, in meters?
- 49.40
- 50.40
- 51.40
- 52.40
1knot = 1.15mph\[ 10 knots = 10 (1.15mph) = 11.50mph \] \[ D = V * T \] \[ D = \frac{11.50mi. (\frac{1.61km.}{1mi.}) (\frac{1000m.}{1km.})}{1hr. (\frac{3600sec.}{1hr.})} * 10sec. \] \[ D = 51.430556m. \] \[ D \approx 51.40m. \leftarrow \text{answer} \]
1mi. = 1.61km.