Question

State whether the following objects possess kinetic energy, potential energy, or both:
(a) A man climbing a hill.
(b) A flying airplane.
(c) A bird running on the ground.
(d) A ceiling fan in the off position.
(e) A stretched spring lying on the ground​

Answer 1

Answer:

ᴀ) ᴍᴀɴ ᴄʟɪᴍʙɪɴɢ ᴏɴ ᴀ ʜɪʟʟ

• ᴘᴏssᴇss ʙᴏᴛʜ ᴇɴᴇʀɢʏ

ʙ) ᴀ ғʟʏɪɴɢ ᴀɪʀᴘʟᴀɴᴇ

• ʜᴀs ʙᴏᴛʜ ᴘᴏᴛᴇɴᴛɪᴀʟ ᴀɴᴅ ᴋɪɴᴇᴛɪᴄ ᴇɴᴇʀɢʏ.

ᴄ) ᴀ ʙɪʀᴅ ʀᴜɴɴɪɴɢ ᴏɴ ᴛʜᴇ ɢʀᴏᴜɴᴅ

• ʜᴀs ᴋɪɴᴇᴛɪᴄ ᴇɴᴇʀɢʏ ᴏɴʟʏ
• ( sɪɴᴄᴇ ʜᴇɪɢʜᴛ=,ᴛʜᴇʀᴇ ғᴏʀ ᴘᴏᴛᴇɴᴛɪᴀʟ ᴇɴᴇʀɢʏ=)

ᴅ) ᴀ ᴄᴇɪʟɪɴɢ ғᴀɴ ᴏɴ ᴀ ᴄᴇʀᴛᴀɪɴ ʜᴇɪɢʜᴛ

• ᴘᴏssᴇss ᴏɴʟʏ ᴘᴏᴛᴇɴᴛɪᴀʟ ᴇɴᴇʀɢʏ
• ( sɪɴᴄᴇ ᴠᴇʟᴏᴄɪᴛʏ=, ᴛʜᴀᴛ ᴋɪɴᴇᴛɪᴄ ᴇɴᴇʀɢʏ =)

ᴇ) ᴀ sᴛʀᴇᴛᴄʜᴇᴅ ʙᴏᴅʏ sᴜᴄʜ ᴀs ᴀ sᴘʀɪɴɢ

• ᴀʟᴡᴀʏs ᴘᴏssᴇss ᴘᴏᴛᴇɴᴛɪᴀʟ ᴇɴᴇʀɢʏ ʙᴜᴛ ɴᴏ ᴋɪɴᴇᴛɪᴄ ᴇɴᴇʀɢʏ