A3-kg mass is in free fall. what is the velocity of the mass after 7 seconds? ?

Explain vector addition, triangle method and parallelogram method

When a 5.0kg cart undergoes a 2.2m/s increase in speed, what is the impulse of the cart

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.