II. Work/Energy is derived from Newton’s 2 nd law and requires that acceleration
ID: 1815034 • Letter: I
Question
II. Work/Energy is derived from Newton’s 2ndlaw and requires that acceleration isconstant. T/F
III. Normal acceleration depends on tangential velocity andshape of the path of motion. T/F
IV. When is the radial direction exactly the same as the normaldirection?
a. They are always thesame.
b. If an object moves at constantspeed.
c. They are never thesame.
d. For circular motion only.
V. If planets had the same density as Earth, therelationship between surface gravity and planet size (radius) wouldbe…
a. Linear (double theradius, double the surface gravity)
b. 2nd order (doublethe radius, quadruple the surface gravity)
c. Inversely proportional toradius
d. Inversely proportional to thesquare of radius
VI. When is angular momentum conserved?
a. When the moment appliedto the mass is constant
b. Only when no external forcesact on a mass
c. It is always conserved ifI take care in choosing proper velocity terms.
Explanation / Answer
I. T II. F III. T IV. a V. a VI. d