Question

what is velocity ???

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Answer 1

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The velocity of an object is the rate of change of its position with respect to a frame of reference, and is a function of time. Velocity is equivalent to a specification of an object's speed and direction of motion (e.g. 60 km/h to the north).

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Answer 2

ᴛʜᴇ ᴠᴇʟᴏᴄɪᴛʏ ᴏꜰ ᴀɴ ᴏʙᴊᴇᴄᴛ ɪꜱ ᴛʜᴇ ʀᴀᴛᴇ ᴏꜰ ᴄʜᴀɴɢᴇ ᴏꜰ ɪᴛꜱ ᴘᴏꜱɪᴛɪᴏɴ ᴡɪᴛʜ ʀᴇꜱᴘᴇᴄᴛ ᴛᴏ ᴀ ꜰʀᴀᴍᴇ ᴏꜰ ʀᴇꜰᴇʀᴇɴᴄᴇ, ᴀɴᴅ ɪꜱ ᴀ ꜰᴜɴᴄᴛɪᴏɴ ᴏꜰ ᴛɪᴍᴇ. ᴠᴇʟᴏᴄɪᴛʏ ɪꜱ ᴇQᴜɪᴠᴀʟᴇɴᴛ ᴛᴏ ᴀ ꜱᴘᴇᴄɪꜰɪᴄᴀᴛɪᴏɴ ᴏꜰ ᴀɴ ᴏʙᴊᴇᴄᴛ'ꜱ ꜱᴘᴇᴇᴅ ᴀɴᴅ ᴅɪʀᴇᴄᴛɪᴏɴ ᴏꜰ ᴍᴏᴛɪᴏɴ (ᴇ.ɢ. 60 ᴋᴍ/ʜ ᴛᴏ ᴛʜᴇ ɴᴏʀᴛʜ).