Which of the following is a scalar quantity ?? (also pls explain what is a scalar quantity if u can in easy words) i need help asap plz. plzz help 1) Distance

2) Displacement

3) Velocity

4) Force

What is the momentum of a 2 kg object moving at 15 meters per second

Four point charges each having charge q are located at the corners of a square having sides of length a. find symbolic expressions for the following. (a) the total electric potential at the center of the square due to the four charges (use any variable or symbol stated above along with the following as necessary: ke.) vtotal= (b) the work required to bring a fifth charge p from infinity to the center of the square (use any variable or symbol stated above along with the following as necessary: w=

Ahorizontal force of 400.0 n is required to pull a 1760 n truck across the floor at a constant speed. find the coefficient of sliding friction.