At t = 0, a particle moving along an x axis is at position x0 = -20 m. The signs

Question

At t = 0, a particle moving along an x axis is at position x0 = -20 m. The signs of the particle’s initial velocity v0 (at time t0) and constant acceleration a are, respectively, for four situations: (1) +, +; (2) +, –; (3) –, +; (4) –, –.

a. In which situations will the particle stop momentarily? (Several choices may be correct.)

b. In which situations will the particle pass necessarily through the origin? (Several choices may be correct.)

c. In which situations will the particle never pass through the origin? (Several choices may be correct.)

Explanation / Answer

a) 2,3

b)1,3

c)4

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