If a high jumper with a mass of 75 kg jumps 2.7 m high, what was her initial velocity?

Which of these statements is true? a. quarks pair with leptons to form protons and neutrons. b. quarks pair with bosons to form photons. c. quarks pair with photons to form protons and neutrons. d. quarks pair with other quarks to form protons and neutrons. e. quarks pair with electrons to form protons.

Suppose you increase your walking speed from 7 m/s to 13 m/s in a period of 2 s. what is your acceleration?

Which of the following are used in an electrochemical cell? a. electrodes b. electrolyte c. terminals d. all of the above