A car is travelling at a velocity of 2.0 m/s. It accelerates at a constant 0.20 m/s² for 2.5 minutes. What is the final velocity of the car?

What is work? how much work is done to move an object 0 meters?

How does an observation about an object differ from an inference about that object

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.