Answer:
An object will remain at rest or continue moving in a straight line with a constant speed unless acted on by an unbalanced force.
Explanation:
Newton's first law of motion states that,
" An object will remain at rest or continue moving in a straight line with a constant speed unless acted on by an unbalanced force ".
It states that energy neither be created nor be destroyed.energy may only be transform from one form to another. example mechanical energy= ek + ep
Answer:
Explained
Explanation:
Big Bang happened about 13.7 billion years ago. It is most accepted theory of universe creation. Several experiments have confirmed the happening of big bang back then, in promising way. One of this experiment is the red shift experiment. A scientist named Edwin Hubble tried to study the spectrum of stars. He made a shocking revelation that universe is rushing outwards in all directions. Light travelling away registers on the red side. He observed that the distance stars showed red shift in accelerated manner. If the universe is accelerating that means, at one point it would have been smaller, in fact it was as small as an atom, some how it exploded and lead to formation of the expanding universe.
