can you have a zero acceleration but non zero velocity? justify
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ʏᴇs, ɪᴛ's ᴘᴏssɪʙʟᴇ ᴛᴏ ʜᴀᴠᴇ ᴢᴇʀᴏ sᴘᴇᴇᴅ ᴡʜɪʟᴇ ᴀᴄᴄᴇʟᴇʀᴀᴛɪɴɢ, ʙᴜᴛ ᴏɴʟʏ ғᴏʀ ᴀɴ ɪɴsᴛᴀɴᴛ. ... ᴀᴄᴄᴇʟᴇʀᴀᴛɪᴏɴ ɪs ᴛʜᴇ ʀᴀᴛᴇ ᴀᴛ ᴡʜɪᴄʜ ᴀɴ ᴏʙᴊᴇᴄᴛ's sᴘᴇᴇᴅ ᴀɴᴅ ᴅɪʀᴇᴄᴛɪᴏɴ ᴀʀᴇ ᴄʜᴀɴɢɪɴɢ ᴡɪᴛʜ ᴛɪᴍᴇ, sᴏ ᴡʜᴇɴᴇᴠᴇʀ ᴀɴ ᴏʙᴊᴇᴄᴛ ᴘᴀssᴇs ᴛʜʀᴏᴜɢʜ ᴢᴇʀᴏ sᴘᴇᴇᴅ ᴀs ɪᴛ ʀᴇᴠᴇʀsᴇs ᴅɪʀᴇᴄᴛɪᴏɴs ɪᴛ ʜᴀs ᴀ ɴᴏɴ-ᴢᴇʀᴏ ᴀᴄᴄᴇʟᴇʀᴀᴛɪᴏɴ ʙᴜᴛ ᴀ sᴘᴇᴇᴅ ᴏғ ᴢᴇʀᴏ
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Yes, it's possible to have zero speed while accelerating, but only for an instant. Acceleration is the rate at which an object's speed and direction are changing with time, so whenever an object passes through zero speed as it reverses directions it has a non-zero acceleration but a speed of zero.
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