in which of the following cases is friction advantageous
a . Movement of vehicles on rough roads
b. A pencil point becoming blunt with use
c. car tyres becoming hot after running fir a long time
d. rubbing of a matchstick on a matchbox
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Answered by
4
Explanation:
ᴀᴄᴛᴜᴀʟʟʏ ᴀʟʟ ᴏғ ᴛʜᴇᴍ ᴀʀᴇ ᴄᴏʀʀᴇᴄᴛ ʙᴜᴛ (ᴀ) ɪs ᴀᴅᴠᴀɴᴛᴀɢᴇᴏᴜs.
ʜᴏᴘᴇ ɪᴛ ʜᴇʟᴘsت︎
ᴍʀ_ᴀʏᴜ☁︎
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0
Answer:
A is ans
Explanation:
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