A cheetah accelerates from rest at a rate of 9 m/s^2 for 3s. How far does it travel in this time? Assume the cheetah moves in a straight line.

a) 27.0 m
b) 40.5 m
c) 13.5 m
d) 54.0 m

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.

If the chemical properties of a substance remain unchanged and appearance or shape of a substance changes it is called a ?

Photons with the highest energy have the longest period