Neptune moves in an elliptical orbit with the sun at one of the foci. the length of half of the major axis is kilometers, and the eccentricity is 0.0086. find the perihelion distance of neptune from the sun. round your answer to the nearest kilometers.

Write the correct abbreviation for each metric unit

Two cannon balls weighing 18 kg and 24 kg are chained together and fired horizontally with a velocity of 165 m/s from the top of a 21-m wall. the chain breaks during the flight of the cannonballs and the 18-kg cannonball strikes the ground at t = 1.5 s, at a distance of 240 m from the foot of the wall, and 7 m to the right of the line of fire. determine the position of the other cannonball at that instant. neglect the resistance of the air.

An object with a mass of 1.5 kg changes its velocity from + 15 m/s to +22 m/s during a time interval of 3.5 seconds. what impulse was delivered to the objects?