Please, HELP!!!

P = mv AP = I = Ft 1. A 1800 kg car is moving at 26 m/s. If its brakes can provide a force of 2500 N, how many seconds will it take to bring the car to a stop? 2. A 1250 kg cannon fires a 15 kg projectile at a velocity of 600 m/s. What is the cannon's recoil velocity? 3. A satellite is orbiting a planet at a total distance of 5.9 x 10 m. Its orbital velocity is 13,500 m/s. A) What is the planet's mass? B) What is its orbital period? 4. What is the gravitational force between a 250 kg mass and a 950 kg mass if they are separated by a distance of 6.5 m? 5. An airplane flies a vertical loop with a radius of 1750 m. The airplane's velocity is 195 m/s. A) What is the centripetal acceleration? B) If the pilot has a mass of 70 kg, what is his weight at the top of the loop? 6. A 1.5 kg ball, moving west at 4 m/s, collides elastically with a 2 kg ball, moving east at 6 m/s. What are the velocities of the two balls after the collision