A speed boat requires 80 kW to move at a constant speed of 12 m/s.What is the resistive force of the water at this speed?
A) 2700 N
B) 5300 N
C) 6700 N
D) 7700 N

Question

Quizplus · Accepted Answer

The resistive force of the water can be calculated using the formula: 
Resistive Force = Power / Velocity

Substituting the given values: 
Resistive Force = 80 kW / 12 m/s 
Resistive Force = 6,666.67 N

Rounding off to the nearest hundred gives the answer as C) 6700 N.

A Speed Boat Requires 80 KW to Move at a Constant