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**Unformatted text preview: **very similar manner the acceleration of the object can be calculated: (13a) (13b) The direction and magnitude of the acceleration vector are: (14) (15) Equation (14) shows that the direction of the acceleration is in the radial direction (opposite to the position vector). See also Figure 4.4. Note: Equation (12) shows that the magnitude of the velocity of the object is constant (independent of time). Equation (11) shows that only its direction changes with time. Note: Equation (15) shows that the acceleration is non-zero. It is clear that this non-zero acceleration does not change the magnitude of the velocity, but it changes its direction. The acceleration will be non-zero if either the magnitude or the direction of the velocity changes....

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