1.

The displacement of a particle undergoing rectilinear motion along the -axis is given by = 2- 21 + 60 + 6 (m)The acceleration of the particle when its velocity is zero, is

A. 36 m/s
B. ± 18 m/s
C. 9 m/s
D. - 9 m/s
Answer» C. 9 m/s


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