You are stranded in space away from your spaceship and you are at rest. Fortunately, you have a propulsion unit that provides a constant force F and you switch it on. F is the only force that acts on your body. After 3 seconds, you have moved 2.25 m. If your mass is 68 kg, what is the magnitude of F

What is the final velocity of the initial velocity of 25 and -50?

The freezing and boiling point of a substance changes as the air pressure around it changes. for example, at a lower air pressure (higher altitude) it is easier for water molecules to escape from liquid into the air. in a high altitude city such as denver, colorado compared to a sea-level city such as houston, texas, water

Amoving electron has kinetic energy k1. after a net amount of work w has been done on it, the electron is moving one-quarter as fast in the opposite direction. (a) find w in terms of k1. (b) does your answer depend on the final direction of the electron's motion?