The ball can't reach the speed of 20 m/s in two seconds, unless you THROW it down from the window with a little bit of initial speed. If you just drop it, then the highest speed it can have after two seconds is 19.6 m/s .
If an object starts from rest and its speed after 2 seconds is 20 m/s, then its acceleration is 20/2 = 10 m/s^2 .
(Gravity on Earth is only 9.8 m/s^2.)
law of conservation of energy
aka the first law of thermodynamics
Would it be an open cluster
A. Translucent because it’s shows a little light on the inside and looks dark on the outside
Next object using low power engery motion.it about physics law
