According to Newton's first law, an object in motion continues in motion with the same speed and in the same direction unless acted upon by an unbalanced force. ... Any passengers in the car will also be decelerated to rest if they are strapped to the car by seat belts.
When the car makes contact with the barrier, there is reaction of equal magnitude that arises from the car making contact with the barrier. The reaction force is easily visible in a car crash, which is why it is such a great way to show how Newton's Third Law can be applied to our lives.
Carbon in reality forms covalent bonds rather than ionic bond, because it has four electrons in its valence shell and needs 4 electron to complete its octet, therefore it don't form ionic bonds. Therefore, this statement is true.
Carbon is placed in p-block, and has an atomic number 6, it has electronegativity between metals and non-metals. Therefore, this statement is correct.
Carbon forms four bonds because in the excited it has four unpaired electron, hence this statement is true.
Silicon is below carbon in periodic table, its size is larger than carbon therefore the bond between Si-Si will be weaker in comparison to the bond between Carbon-Carbon.