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

Two technicians are discussing a resistance measurement between the can-h and can-l wires. technician a says this measurement should be done with the ignition switch in the "run" position. technician b states that a measurement of 0 ohms indicates an open in the network. which technician is correct?

For the car in the picture ,in which direction is the normal force? -into the screen -down -out of the screen -up

The man of mass m1 and the woman of mass m2 are standing on opposite ends of the platform of mass m0 which moves with negligible friction and is initially at rest with s = 0. the man and woman begin to approach each other. derive an expression for the displacement s of the platform when the two meet in terms of the displacement x1 of the man relative to the platform.