Aboat moves through the water with two forces acting on it. one is a 1500 n forward push by the water on the propeller, and the other is an 1300 n resistive force due to the water around the bow.
(a) what is the acceleration of the 1200 kg boat?
(b) if it starts from rest, how far will it move in 7.0 s?
c) what will its velocity be at the end of that time?

1-10. need . physics. circular motion. 35 points

Identify the correct relation showing that the radius r of the orbit of a moon of a given planet can be determined from the radius r of the planet, the acceleration of gravity at the surface of the planet, and the time τ required by the moon to complete one full revolution about the planet. determine the acceleration of gravity at the surface of the planet jupiter knowing that r = 71 492 km and that t= 3.551 days and r= 670.9 × 10^3 km for its moon europa.

What efficiency of a car's engine when heat input is 200,000 joules and waste heat is 150,000 joules? a. 75% b. 35% c. 25% d. 85%