An object's motion changes
a.
only when a nonzero net force is applied to the object.
b.
only if the object is at rest when a force acts upon it.
c.
when the forces acting on the object remain balanced.
d.
when there are no forces acting upon it.

Awalk up the phase change graph worksheet

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 spring constant k of a pogo stick is 3500 n m and the weight of the person on the pogo stick is 700 n, how much is the spring in the botom of the pogo stick compressed?