If a particle travels with constant speed, must its acceleration vector be zero? Explain.
For a particle in uniform circular motion around a circle, which of the vectors v(t) or a(t) always points toward the center of the circle?
Two objects travel to the right along the parabola y = x2 with nonzero speed. Which of the following statements must be true?
Their velocity vectors point in the same direction.
Their velocity vectors have the same length.
Their acceleration vectors point in the same direction.
Use the decomposition of acceleration into tangential and normal components to explain the following statement: If the speed is constant, then the acceleration and velocity vectors are orthogonal.
If a particle travels along a straight line, then the acceleration and velocity vectors are (choose the correct description):
Orthogonal
Parallel
What is the length of the acceleration vector of a particle traveling around a circle of radius 2 cm with constant velocity 4 cm/s?
Two cars are racing around a circular track. If, at a certain moment, both of their speedometers read 110 mph. then the two cars have the same (choose one):
aT
aN
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