Question

4) Jet plane & Rocket works on basis of
1) Newton's First Law of Motion
2) Law of Energy
3) Newton's Second Law of Motion
4) Newton's Third Law of Motion​

Answer 1

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$\fbox \red {ɴᴇᴡᴛᴏɴ's\: ᴛʜɪʀᴅ\: ʟᴀᴡ\: ᴏғ\: ᴍᴏᴛɪᴏɴ}$

☞ ᴊᴇᴛ ᴇɴɢɪɴᴇs ᴀɴᴅ ʀᴏᴄᴋᴇᴛs ᴡᴏʀᴋ ᴏɴ ᴛʜᴇ sᴀᴍᴇ ᴘʀɪɴᴄɪᴘʟᴇ. ᴛʜᴇʏ ᴘʀᴏᴅᴜᴄᴇ ᴛʜʀᴜsᴛ ᴛʜʀᴏᴜɢʜ ᴀɴ ɪɴᴛᴇʀɴᴀʟ ᴘʀᴇssᴜʀᴇ ᴅɪғғᴇʀᴇɴᴄᴇ ᴀɴᴅ, ᴀs ᴇxᴘʟᴀɪɴᴇᴅ ʙʏ ɴᴇᴡᴛᴏɴ's ᴛʜɪʀᴅ ʟᴀᴡ ᴏғ ᴍᴏᴛɪᴏɴ, ᴇᴊᴇᴄᴛ ᴇxʜᴀᴜsᴛ ɢᴀsᴇs ɪɴ ᴀɴ ᴇǫᴜᴀʟ ᴀɴᴅ ᴏᴘᴘᴏsɪᴛᴇ ᴅɪʀᴇᴄᴛɪᴏɴ.

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Hope it helps ✌️❣️