A roller coaster car rapidly picks up speed as it

rolls down a hlope. As it starts down the slope,

its speed is 4 m/s. But 3 seconds later, at the

bottom of the slope, its speed is 22 m/s. What is

the car's acceleration?

When measuring wellness, you must consider

Why was the concern over global cooling replaced with a concern over global warming?

The process in which a substance changes from a gaseous state to the liquid state is A. absolute zero. B. condensation. C. critical temperature. D. evaporation.

The Vernal Equinox is the shortest day of the year. Question 8 options: True False

As a rock rolls down a hill, which types of energy are changing? A. Light energy and gravitational potential energy B. Kinetic energy and nuclear energy C. Elastic energy and sound energy D. Gravitational potential energy and kinetic energy

For a vacation, you and your family fly east to west from Boston, Massachusetts, to Seattle, Washington. You notice that your flight back home to Boston is shorter than your flight to Seattle. Which phenomenon causes your flight home to be shorter?

You spy on an anchor on the bottom of a lake. What is the direction and amount of force the water exerts on it: a) zero b) up, equal to the weight of the anchor. c) up, less than the weight of the anchor d) down, equal to the weight of the anchor.

How are electromagnetic waves different from matter waves?

A dc generator is the same as a (n) a. electric motor. b. ac generator. c. armature. d. electric current.

Which of the following best describes scientific knowledge A.) Durable B.) Absolute and never changing C.) Frequently varies