A train travels 90 kilometers in 2 hours, and then 66 kilometers in 2 hours. What is its average speed?

Which describes the information required to determine the average velocity of an object? A. speed and time B. distance and time C. displacement and time D. mass and time My answer is A, but I am not sure.

Which of the following features was not created by subduction A. japanese B. andes mountains in south america C. hawaii

Which of the following best describes kinetic energy? a. static energy b. thermal energy c. potential energy d. energy of motion

What do paramecium eat

While strolling downtown on a saturday afternoon, you stumble across an old car show. as you are walking along an alley toward a main street, you glimpse a particularly stylish alpha romeo pass by.

A machine with a mechanical advantage of 10 is used to produce an output force of 250 newtons. What input force is applied to this machine

Why do you float in space

How does physical change affect the identity of a substance

A scientist pours grape juice on three identical white shirts He then uses three different cleaning products on the shirts and measures how clean they get what is the independent variable in this experiment

What part of the atom does nuclear radiation come from?