Which of the following is example of direct observation

A red car with a mass of 3.0 kg traveling at 8 m/s collided with a blue car with a mass of 2.0 kg, which is at rest. The velocity of the blue car after the elastic collision is 9.6 m/s. What is the velocity of the red car?

Fusion is the change of phase from: O gas to liquid O liquid to solid O liquid to gas O solid to liquid

How does the total amount of energy change as the spring goes up and down?

A student submerges an irregularly object in a graduated cylinder half filled with water. The level of the water in the cylinder rises from 17.8 ml to 49.7 ml. If the density of water is 0.9984 kg/liter, calculate the mass of the object in grams.

Which best describes the energy change that takes place during deposition?

Which organization functions to privide clinics and surgeries i developing nations

What role do convection currents play in oceans and the atmosphere?

What causes density currents to form in the mediterranean sea? a. condensation b. evaporation c. transpiration d. upwelling

How long does it take a car to travel 450 km at 75 km/hr

A free-falling golf ball strikes the ground and exerts a force on it