Question

what is velocity and newtons law of motion

Answer 1

object which covers a certain displacement is called velocity and it is a vector quantity.
Newton first law of motion -an object tense to be in state of motion or state of rest until and unless an external force acts on it.
Newton's second law of motion- the rate of change of momentum is directly proportional to the applied unbalance force in the direction of the force.
Newton's third law of motion-every action has equal and opposite reaction

Answer 2

ᴀɴsᴡᴇʀ࿐

ɴᴇᴡᴛᴏɴ's ʟᴀᴡ ᴏғ ᴍᴏᴛɪᴏɴ:-

1sᴛ ʟᴀᴡ:-

ᴏʙᴊᴇᴄᴛ ɪɴ ᴍᴏᴛɪᴏɴ ᴛᴇɴᴅs ᴛᴏ sᴛᴀʏ ɪɴ ᴍᴏᴛɪᴏɴ ᴀɴᴅ ᴏʙᴊᴇᴄᴛ ᴀᴛ ʀᴇsᴛ ᴛᴇɴᴅs ᴛᴏ sᴛᴀʏ ᴀᴛ ʀᴇsᴛ ᴜɴʟᴇss ᴀᴄᴛᴇᴅ ᴜᴘᴏɴ ʙʏ ᴀɴ ᴜɴʙᴀʟᴀɴᴄᴇᴅ ғᴏʀᴄᴇ.

2ɴᴅ ʟᴀᴡ:-

ғᴏʀᴄᴇ ᴇǫᴜᴀʟ ᴍᴀss ᴛɪᴍᴇs ᴀᴄᴄᴇʟᴇʀᴀᴛɪᴏɴ(ғ= ᴍᴀ)

3ʀᴅ ʟᴀᴡ:-

ғᴏʀ ᴇᴠᴇʀʏ ᴀᴄᴛɪᴏɴ ᴛʜᴇʀᴇ ɪs ᴀɴ ᴇǫᴜᴀʟ ᴀɴᴅ ᴏᴘᴘᴏsɪᴛᴇ ʀᴇᴀᴄᴛɪᴏɴ.