false
false, they vibrate parallel
All atoms and molecules are always in motion. The average kinetic energy of an atom or molecule in any material is proportional to the temperature. This is true whether the material is solid, liquid or gas. Caveat: It is sometimes said that motion ceases at absolute zero in temperature. That is almost true, but there is something called quantum zero point motion that is present even at zero temperature and that complicated the question to a level that is beyond the current discussion.
It is false.
False.
Answer this question…False
False. First it accelerates and at a certain point speed decreases till the projectile bursts or stops somewhere.
True
false
false
The answer is False
False.
No. The definition of projectile motion is an object dropped launched into the air, which is acted upon by gravity. (For the basic forms of the motion, air resistance is ignored.)
False
False
No. Neglecting air resistance, the projectile follows a parabola. The horizontal distance is proportional to 'time', and the vertical distance is proportional to 'time squared'. This is exactly the description of a parabola.
Since I have read that the path of a projectile is always a parabola, I must say no. The parabolic shape of a projectile's path results from the combination of the force and direction with which it is launched and its weight.A ball rolling down a slope, is not Projectile Motion. While a cannon ball can be used to be a projectile, as far as Physics goes, that is not how it is operating at the moment (rolling down a slope).
it is false