The value of an object's acceleration may be characterized in equivalent words by which of the following?
a. displacement
c. velocity
b. rate of change of displacement
d. rate of change of velocity
Question 2
A v-t graph is drawn for a ball moving in one direction. The graph starts at the origin and at t = 6 s the acceleration of the ball is zero. We know that at t = 6 s,
a. the slope of the curve is non-zero.
c. the velocity of the ball is not changing.
b. the curve is not crossing the time axis.
d. the curve is at v = 0, t = 0.
Two equivalent ways of drawing a phylogeny
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