The speed of a boat is often given in knots. If a speed of 5 knots were expressed in the SI system of units, the units would be:.

0.514 m/s

Explanation:

The knot is a unit of nautical speed used in maritime navigation.

1 knot is equal to one nautical mile per hour,

1 nautical mile per hour = 1.852 km/h

The basic SI system of units of speed is in 'm/s'

1.852 km/h = (1.852 x 1000)/3600 = 0.514 m/s

multiply 2kg by latent heat of vap

there are no contact forces mentioned on the list of choices that you've provided.