physics
mechanics
Easy

Question

T h e space a v e r a g e space a c c e l e r a t i o n space v e c t o r space f o r space a space p a r t i c l e space h a v i n g space a space u n i f o r m space c i r c u l a r space m o t i o n space i s space

  1. A c o n s t a n t v e c t o r o f m a g n i t u d e pi squared m s to the power of negative 2 end exponent
  2. E q u a l space t o space t h e space i n s tan tan e o u s space a c c e l e r a t i o n space v e c t o r space a t space t h e space s t a r t space o f space t h e space m o t i o n
  3. A v e c t o r o f m a g n i t u d e pi squared m s to the power of negative 2 end exponent d i r e c t e d n o r m a l t o t h e p l a n e o f t h e g i v e n u n i f o r m c i r c u l a r m o t i o n
  4. A space n u l l space v e c t o r

The correct answer is: A space n u l l space v e c t o r


    I n space c o m p l e t e space r e v o l u t i o n space c h a n g e space i n space v e l o c i t y space b e c o m e s space z e r o space s o space a v e r a g e space a c c e l e r a t i o n space w i l l space b e space z e r o.

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