An object is dropped from an airplane and takes 72 seconds to hit the ground. what is the magnitude of its vf y ?

Which of the following is not am example of a polymer? protein nylon kevlar concreta

If the wheels lock when braking suddenly the vehicle: a: loses traction b: lose steering wheel ability c: gain speed slightly d: gain steering ability

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.