Question

what is kinetic energy? can kinetic energy be negative ? why ? ​

Answer 1

Answer:

Kinetic energy can't be negative, although the change in kinetic energy Δ K \Delta K ΔK can be negative. Because mass can't be negative and the square of speed gives a non-negative number, kinetic energy can't be negative.

Explanation:

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Answer 2

ᴇɴᴇʀɢy ᴡʜɪᴄʜ ᴀ ʙᴏᴅy ᴩᴏꜱꜱᴇꜱꜱᴇꜱ ʙy ᴠɪʀᴛᴜᴇ ᴏꜰ ʙᴇɪɴɢ ɪɴ ᴍᴏᴛɪᴏɴ.

Because mass can't be negative and the square of speed gives a non-negative number, kinetic energy can't be negative. Either something is moving and has positive kinetic energy, or it is not moving and has zero kinetic energy.