Question

Define velocity and acceleration is it possible for a body to have zero velocity but
constant aceleration Justify your answer​

Answer 1

Answer:

Yes,a body can have zero velocity ,and constant acceleration. A body will have zero velocity when in a circular motion, i.e the body comes back to its initial position. And displacement will be zero. ... Since the motion is circular,there will be a constant acceleration

Answer 2

ᴠᴇʟᴏᴄɪᴛʏ :-

☞ᴛʜᴇ ʀᴀᴛᴇ ᴏғ ᴄʜᴀɴɢᴇ ᴏғ ᴛʜᴇ ᴏʙᴊᴇᴄᴛ’s ᴘᴏsɪᴛɪᴏɴ ᴡɪᴛʜ ʀᴇsᴘᴇᴄᴛ ᴛᴏ ᴀ ғʀᴀᴍᴇ ᴏғ ʀᴇғᴇʀᴇɴᴄᴇ ᴀɴᴅ ᴛɪᴍᴇ.

ᴀᴄᴄᴇʟᴇʀᴀᴛɪᴏɴ :-

☞ᴀᴄᴄᴇʟᴇʀᴀᴛɪᴏɴ ɪs ᴀ ᴠᴇᴄᴛᴏʀ ǫᴜᴀɴᴛɪᴛʏ ᴛʜᴀᴛ ɪs ᴅᴇғɪɴᴇᴅ ᴀs ᴛʜᴇ ʀᴀᴛᴇ ᴀᴛ ᴡʜɪᴄʜ ᴀɴ ᴏʙᴊᴇᴄᴛ ᴄʜᴀɴɢᴇs ɪᴛs ᴠᴇʟᴏᴄɪᴛʏ.

ᴊᴜsᴛɪғɪᴄᴀᴛɪᴏɴ :-

☞ʏᴇs. ᴡʜᴇɴ ᴀ ʙᴏᴅʏ ɪs ᴛʜʀᴏᴡɴ ᴜᴘᴡᴀʀᴅs, ᴀ ᴄᴏɴsᴛᴀɴᴛ ᴀᴄᴄᴇʟᴇʀᴀᴛɪᴏɴ ᴀᴄᴛs ᴏɴ ᴛʜᴇ ʙᴏᴅʏ ᴡʜɪᴄʜ ɪs ᴅᴏᴡɴᴡᴀʀᴅ 9.81ᴍ/s ᴘᴇʀ sᴇᴄᴏɴᴅ. ʙᴜᴛ ᴀᴛ ᴛʜᴇ ᴛᴏᴘᴍᴏsᴛ ᴘᴏɪɴᴛ ᴛʜᴇ ᴠᴇʟᴏᴄɪᴛʏ ᴏғ ʙᴏᴅʏ ʙᴇᴄᴏᴍᴇs ᴢᴇʀᴏ.