Max Velocity, Time, Distance w/ 2 Thrusters & 1 Upward Thruster

AI Thread Summary
The discussion centers on calculating the maximum velocity, time to reach that velocity, and distance traveled for a UROV with two forward thrusters and one upward thruster, given a thrust of 5 N per motor. The UROV weighs 5.68 lbs and is tested in a chlorine pool. The user is attempting to apply the formula F=ma to derive acceleration but is encountering issues with too many unknowns. There is a request for clarification on assumptions needed for the calculations, particularly regarding drag force at maximum velocity. The scenario highlights the complexities of underwater robotics dynamics and the need for precise calculations.
chrispet
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Im working with a UROV and I have a technical scenario that I am supposed to solve. It seems pretty easy but i keep getting ridiculous answers.

Assuming a max thrust of 5 N for 1 motor/propeller, for the forward direction only, use the above information to determine the Max Velocity, the Time to achieve this velocity and the Distance traveled. Please be sure to state all assumptions.
Calculate the Drag Force at Max Velocity

My robot has 2 thrusters thrusting forward and 1 upward, it weighs 5.68 lbs, and we are testing them a chlorine pool.

I was trying to use F=ma to get the acceleration then use constant accel equations to get the other parts but I think there's too many unkowns.
 
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