Aroller coaster car rapidly picks up speed as it rolls down a slope. as it starts down the slope, its speed is 4m/s. but 3 seconds later at the bottom of the slope its speed is 22m/s. what is its average acceleration?

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

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.

1.what is where an object is located 2. what is how fast an objects speed is changing 3. what is how fast an object is moving