A One car travels south at 4 m/s. The other car travels east at 2 m/s.
B One car travels north at 4 m/s. The other car travels
west at 2 m/s.
C One car travels north at 2 m/s. The other car travels
east at 4 m/s.
D One car travels south at 4 m/s. The other car travels
west at 2 m/s.

Awater-filled u-tube manometer is used to measure the pressure inside a tank that contains air. the water level in the u-tube on the side that connects to the tank is 5 ft above the base of the tank. the water level in the other side of the u-tube (which is open to the atmosphere) is 2 ft above the base. determine the pressure within the tank.

What is the coefficient of kinetic friction μk between the block and the tabletop?

When the displacement of a mass on a spring is 12a the half of the amplitude, what fraction of the mechanical energy is kinetic energy? at what displacement, as a fraction of a, is the mechanical energy half kinetic and half potential?