Question

Define force of friction​

Answer 1

Explanation:

friction is the force resisting the relative motion of

solid surface , fluid layers and material element

sliding again each other

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Answer 2

Answer -

• ғʀɪᴄᴛɪᴏɴ ɪs ᴛʜᴇ ғᴏʀᴄᴇ ʀᴇsɪsᴛɪɴɢ ᴛʜᴇ ʀᴇʟᴀᴛɪᴠᴇ ᴍᴏᴛɪᴏɴ ᴏғ sᴏʟɪᴅ sᴜʀғᴀᴄᴇs, ғʟᴜɪᴅ ʟᴀʏᴇʀs, ᴀɴᴅ ᴍᴀᴛᴇʀɪᴀʟ ᴇʟᴇᴍᴇɴᴛs sʟɪᴅɪɴɢ ᴀɢᴀɪɴsᴛ ᴇᴀᴄʜ ᴏᴛʜᴇʀ. ᴛʜᴇʀᴇ ᴀʀᴇ sᴇᴠᴇʀᴀʟ ᴛʏᴘᴇs ᴏғ ғʀɪᴄᴛɪᴏɴ: ᴅʀʏ ғʀɪᴄᴛɪᴏɴ ɪs ᴀ ғᴏʀᴄᴇ ᴛʜᴀᴛ ᴏᴘᴘᴏsᴇs ᴛʜᴇ ʀᴇʟᴀᴛɪᴠᴇ ʟᴀᴛᴇʀᴀʟ ᴍᴏᴛɪᴏɴ ᴏғ ᴛᴡᴏ sᴏʟɪᴅ sᴜʀғᴀᴄᴇs ɪɴ ᴄᴏɴᴛᴀᴄᴛ.