Lisa was choosing between three alternatives: working on her job that pays her $60; writing a term paper which she values at $40; or going out with a friend, which she values at $80. The opportunity cost of going out with her friend is

Why is energy important to motion?

Disregarding air resistance, what is the speed of a ball dropped from 12 feet just before it hits the ground? (Use 1 ft = 0.30 m, and use g = 9.8 m/s2.)

1. Ca atomic number 2. H2O fission 3. nuclear decay element 4. nuclear synthesis fusion 5. η compound 6. positive charge electron 7. e neutron 8. number of protons in nucleus proton

Why is density used to determine the identity of matter?

Is a glacier nothing more than a huge mineral flowing downhill? (Earth & Space)

Bernie drove home from a vacation in 1.5 hours. He traveled a total distance of 60 miles. What was his average speed in miles per hour

What advice a personal trainer most likely give u before a workout

An elevator supported by a single cable descends a shaft at a constant speed. The only forces acting on the elevator are the tension in the cable and the gravity. Which one of the following statements is correct? Group of answer choices A.

If the acceleration of a moving object is zero, which of the following best describes its motion

Calculate mass During a softball game a softball is struck by a bat and has an acceleration of 1,500 kg. If the net force force exerted on the softball by the bat is 300 N, what is the softballs mass.