Which statement describes what happens when Bret runs up a flight of stairs?

His kinetic energy increases.

His potential energy decreases.

His kinetic energy is converted into potential energy.

His potential energy is converted into kinetic energy.

Tom rides his skateboard 2.4km in 20 mins and Max rides his scooter 3.6km in 30 mins. Who is moving at a faster rate (speed) ? Choose the correct formula and show your work. (what you are plugging into the calculator) Use proper units in your answer.

A machine lifts a 1000 N object 40 meters in 15 seconds. How much work is done by the machine

Which do you think is the bigger problem among college students-the continued abuse of illegal drugs or the rising abuse of prescription and over-the-counter medications?

Which is the best procedure to make a permanent magnet? A. placing a magnetically hard material in a weak magnetic fieldB. B. placing a magnetically hard material in a strong magnetic field C.

What is the charge of a newly formed oxygen ion

In a polar covalent bond

Lindsay is late to class and is running down the hallway at a speed of 2 m/s the length of the hallway is 150 meters. How long will it take her to run down the hallway?

Which of the following is evidence that groundwater causes erosion and deposition?

Changing the direction of current will or will not affect the strength of an electromagnet

A swimming pool has the dimensions of 10 meters, 5 meters, and 1 meter. What is the pool's volume? 50 m 50 m3 50 m2 25 m3