Question

Problem 1: An air-boat.

Rangers at the everglades national park, ride an air-boat, the mass of the air boat plus the rangers is 500 kg. The blades of the boat push on the air with 1000N, while moving the rangers experience an air resistance force of 200N directed opposite to the direction of motion, and the boat a water resistance of 250N. They move in straight line for 20s. Please complete the following tasks:

1. Draw the free-body diagram showing all forces acting on the air-boat ranger system
2. Calculate the net force acting on the boat-ranger system
3. Determine the accelerations of the air boat system;
4. What is the coefficient of friction between the water and the boat?
5. What is the velocity of the boat at the end of the 20s, if its initial velocity was 20 m/s
6. How far did the boat travel in those 20s?

Problem III: Satellite orbiting Earth.

A satellite of mass 1000 kg orbits the Planet X at a distance of 6000 km above its surface. The satellite circles Planet X once every 7 hours. Determine the following quantities:

1. The orbital velocity of the satellite in m/s about planet X;
2. The acceleration of the satellite;
3. The Force that Planet X applies on the satellite; and

d) the Mass of Planet X.

Answer 1

answered by: anonymous