The force that pulls falling objects toward Earth is called

a. gravity.

b. free fall.

c. acceleration.

d. air resistance.

Before the car starts, the driver and all the passengers should always: adjust the position of their seats buckle and adjust their seatbelts turn on the radio none of the above

Is burning a nonrenewable natural gas a chemical change

An aircraft with a mass of 2700kg is moving across the runway at 2m/s. How much Force is involved?

Which of the following has the most momentum? an ant moving at 1 m/s a bird flying at 4 m/s a cat moving at 13 m/s you riding your bike at 12 m/s

Describe the conversions between potential and kinetic energy that occur when you shoot a basketball at a basket

1. a substance with a pH of 3 2. a substance with a pH of 10 3. a substance with a pH of 7 4. an indicator 5. a scale that represents the concentration of H30+, 0-14 A.) phenolphthalein B.) base C.) pH scale D.) neutral E.) acid

An advertisement uses a movie star holding a bottle of perfume. This ad is an example of which of the following? A. an appeal of association. B. an appeal to reason. C. an appeal to economics. D. an appeal to patriotism.

An example of an unbalanced force is

When the atom's electrons step down to lower energy levels in a thin cloud of hot gas, what is produced?

Which is the relationship between algae and fungus? Options: Parasitism. Commensalism. Mutualism.