Question

If the mass of a body is doubled and the velocity becomes half, then the linear momentum of the body will​

Answer 1

Answer:

kinetic energy becomes 22=4 times i.e. say from 100 units to 400 units.

Explanation:

Answer: Kinetic energy of a body of given mass, is directly proportiional to its square of its velocity. When momentum is doubled, mass remaining constant, this means velcity is doubled. Hence, kinetic energy becomes 22=4 times i.e. say from 100 units to 400 units.

Answer 2

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ɪғ ᴛʜᴇ ᴍᴀss ᴏғ ᴀ ʙᴏᴅʏ ɪs ᴅᴏᴜʙʟᴇᴅ ᴀɴᴅ ᴛʜᴇ ᴠᴇʟᴏᴄɪᴛʏ ʙᴇᴄᴏᴍᴇs ʜᴀʟғ, ᴛʜᴇɴ ᴛʜᴇ ʟɪɴᴇᴀʀ ᴍᴏᴍᴇɴᴛᴜᴍ ᴏғ ᴛʜᴇ ʙᴏᴅʏ ᴡɪʟʟ​ ?

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ᴋɪɴᴇᴛɪᴄ ᴇɴᴇʀɢʏ ᴏғ ᴀ ʙᴏᴅʏ ᴏғ ɢɪᴠᴇɴ ᴍᴀss, ɪs ᴅɪʀᴇᴄᴛʟʏ ᴘʀᴏᴘᴏʀᴛɪɪᴏɴᴀʟ ᴛᴏ ɪᴛs sǫᴜᴀʀᴇ ᴏғ ɪᴛs ᴠᴇʟᴏᴄɪᴛʏ. ᴡʜᴇɴ ᴍᴏᴍᴇɴᴛᴜᴍ ɪs ᴅᴏᴜʙʟᴇᴅ, ᴍᴀss ʀᴇᴍᴀɪɴɪɴɢ ᴄᴏɴsᴛᴀɴᴛ, ᴛʜɪs ᴍᴇᴀɴs ᴠᴇʟᴄɪᴛʏ ɪs ᴅᴏᴜʙʟᴇᴅ. ʜᴇɴᴄᴇ, ᴋɪɴᴇᴛɪᴄ ᴇɴᴇʀɢʏ ʙᴇᴄᴏᴍᴇs = ᴛɪᴍᴇs ɪ.ᴇ. sᴀʏ ғʀᴏᴍ ᴜɴɪᴛs ᴛᴏ ᴜɴɪᴛs.

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