Assuming no air resistance, all projectiles have
2 answers:
All projectile have parabolic motion and same vertical acceleration.
In fact, the motion of a projectile can be resolved separately in two directions: horizontal and vertical.
In the horizontal direction, the projectile moves by uniform motion with constant speed (because there are no forces acting in this direction).
In the vertical direction, the projectile has a uniformly accelerated motion, with constant acceleration (acceleration of gravity) downward.
The resultant motion of these two separate motions is a parabolic motion.
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Answer:
✓ A cyclone device accumulates fine particulates from the air by making a dirty air stream flow in a spiral path inside a cylindrical chamber.
✘ It consists of several long and narrow fabric filter bags suspended upside-down in a large enclosure.
✓ When dirty air enters the chamber, the larger particulates strike the chamber wall and fall into a conical dust hopper at the bottom.
✘ Fans blow dirt-filled air upward from the bottom of the enclosure, trapping dirt particles inside the filter bags and releasing clean air from the top.
✓ The top of the chamber has an outlet that lets out cleaned air.
Basically, any of these choices that have the word "filter" are wrong. The point of the cyclone device is to separate the particles without the use of filters. You can tell the right answers based on the picture attached below.
