The average speed of a plane was 600 km/hr. How long did it take the plane to travel 120 kilometers?

Why is the energy that results from a roller coaster's position at the top of a hill referred to as potential energy?

If element x has 99 protons how many electrons does it have

Increasing the pressure on one spot of a fluid will increase the pressure everywhere else in the fluid a. pascals principal b. archimedes' principal c. bernoulli's principal