How do earths surface features indicate change over time?

A toy train is traveling along a circular track at a constant speed of 1.0 m/s. The acceleration of the train is found to be 4.0 m/s2 . What is the radius of the track?

The slope of a position-time graph of an object gives the speed of the object. True False

A motorbike travels 45 miles in 15 minutes what is its speed

Wood is a substance that burns in the presence of oxygen. Which best describes this property of wood? reactive combustible metallic sour

Which was a testable idea that Ernest Rutherford developed in his experiments? - The positive charge in an atom is concentrated in one location. - Atoms are not divisible into smaller particles. - It is impossible to define the mass of an atom.

Explain Newton's First Law for the following. If you walk across the room holding a ball, when should you drop it to ensure that it lands on a target? Before, after or when you are directly on the target?

In what way are all forms of potential energy the same?

Enise is riding her bike and falls to the ground. During the collision, she hits both grass and cement. Which best explains why Denise had fewer injuries to the area of her body that hit the grass?

A rock is dropped into the Grand Canyon. It takes 18 seconds to hit the bottom. Calculate how deep the canyon is.

A change from one form of energy into another is called a. gravitational potential energy. b. work. c. conservation of energy. d. an energy transformation