Final answer:
A large motor yacht may not be the best option for water skiing due to lacking the high speed and agility needed, although it could technically pull a skier. For the physics calculation, the combined acceleration of two skiers with a net force of 290 N is approximately 2.66 m/s².
Step-by-step explanation:
A large motor yacht may not be the ideal choice for water skiing, primarily because such yachts are designed for leisure cruising and not for the high speeds and maneuverability required for water skiing. While they are capable of pulling skiers, their performance will depend on factors such as the propulsion mechanism and horsepower. Typically, propellers used in large yachts may not provide the quick acceleration and agility needed for an optimal water skiing experience.
To answer the second part of the question involving physics calculations: If two water-skiers, with masses of 48 kg and 61 kg respectively, are being towed and the rope exerts a net force of 290 N, you would calculate the acceleration they experience using Newton's second law of motion, F = ma. The combined mass is 48 kg + 61 kg = 109 kg. Therefore, the acceleration, a = F/m = 290 N / 109 kg, which calculates to approximately 2.66 m/s2.