What is the total mechanical energy of a 200 kg roller coaster moving with a velocity of 16 m/s at a height of 18 m above the ground?

Which of the following is the correct unit for time when calculating power in watts? a. hours b. minutes c. days d. seconds

Sails on sail boats take advantage of which type of energy?

A 700k/g race car slowed down from 30m/s to 15m/s what is the impulse and what was the average force applied by the brakes

Two boxes of masses m=35kg and m2=45kg, are hung vertically from opposite ends of a rope passing over a rigid horizontal metal rod. They system starts moving from rest.

A stone is falling freely from rest and the total distance covered by it in the last second of its motion equals the distance covered by it in the first 3 seconds of its motion. How long does the stone remain in air?

Is speed and average speed the same thing?

Explain constellations and galaxies in detail.

A vw bug is driving north on a striaght two lane road at a constant 38mph and a chevy impala is driving south at 29mph on the same road heading toward the vw bug (but in a different lane).

Ptolemy and Copernicus were astronomers who had proposed theories about the solar system. Ptolemy believed that the planets and the sun orbited Earth. Copernicus believed that Earth and other planets circled a stationary sun.

A TV draws 0.867 A of current when connected to a 122 V outlet. It's resistance is 140.71. A.) How many electrons pass through the TV per minute? B.) How much electrical energy does the TV convert to other forms of energy per minute?