QUESTION 19

1. For the stroboscopic analysis of a uniformly accelerated/decelerated motion to be possible, the motion must be:

   	a.	uniform only.
   	b.	uniformly accelerated only.  .
   	c.	uniformly decelerated only.
   	d.	uniformly accelerated followed by a uniformly decelerated motion.             .
   	e.	either uniformly accelerated only or uniformly decelerated only.

1 points  

QUESTION 20

1. A force launches a vessel vertically up in the space.  The vessel\'s acceleration is four times the gravity constant. This force accelerating the vessel from the ground is equivalent to

   	a.	twice of the vessel\'s weight
   	b.	the vessel\'s weight exactly
   	c.	four times the vessel\'s weight
   	d.	five times the vessel\'s weight
   	e.	None of the above