Tutor profile: David K.
Convert 200 meters/seconds to centimeters/ hour.
Answer is 1,200,000 cm/ hr. First we want to change meters to centimeters. We multiply 200meters/ seconds with 100 centimeters/ 1 meter (which is essentially 1 because 100centimeters = 1 meter). Similarly, we multiply 3600 seconds/ 1 hour.
Jane throws a baseball at 15 m/s to Dave. Then, Jane throws another identical baseball to Dave at 20 m/s. Which throw has more kinetic energy?
The answer is the second throw. The equation related to kinetic energy is KE= (1/2)mv^2. [m= mass of object; v= velocity of object] In this equation, (1/2) and the mass are constants because the neither numbers will not change. The only changing variable is the velocity. The first throw is thrown at 15 m/s while the second throw was 20 m/s. Since we can ignore the constants, which will not affect our answer, we can compare the changing variables. Since 20^2 will return a greater value than 15^2, we come to the conclusion of saying the second throw with 20 m/s has greater kinetic energy.
Subject: College Admissions
Which of the following is the most important in applying to colleges/ universities? 1. SAT/ ACT scores 2. SAT subject scores 3. High School GPA 4. College Application Essay 5. Teacher recommendation
The answer is High School GPA. Of course having good standardized test scores, college application essay, and teacher recommendation are all important, but nothing like high school GPA and course work show how well rounded of a person you are, how much you challenge yourself, and how well you can deal with those challenges like your high school GPA (accumulation of your classroom life for 4 years!).
needs and David will reply soon.