Question

A driver decreases the speed of a car from 25m/s to 10m/s in 5 seconds. Find the acceleration f the car.
write ans will be mark as braunlest do fast pls pls ​

Answer 1

Answer:

ғɪʀsᴛ ɪғ ᴀʟʟ ᴡᴇ sʜᴏᴜʟᴅ ɴᴏᴛᴇ ᴛʜᴀᴛ ɪɴ ᴛʜɪs ᴘʀᴏʙʟᴇᴍ ᴛʜᴇ ᴛᴇʀᴍ 'sᴘᴇᴇᴅ' ɪs ʙᴇɪɴɢ ᴜsᴇᴅ ɪɴ ᴛʜᴇ sᴀᴍᴇ sᴇɴᴄᴇ ᴀs 'ᴠᴇʟᴏᴄɪᴛʏ'

ʜᴇʀᴇ'

ɪɴɪᴛɪᴀʟ ᴠᴇʟᴏᴄɪᴛʏ ᴏғ ᴄᴀʀ, ᴜ = 25ᴍ/s

ғɪɴᴀʟ ᴠᴇʟᴏᴄɪᴛʏ ᴏғ ᴄᴀʀ, ᴠ = 10ᴍ/s

ᴀɴᴅ,

ᴛɪᴍᴇ ᴛᴀᴋᴇɴ, ᴛ = 5s

ɴᴏᴡ, ᴘᴜᴛᴛɪɴɢ ᴛʜᴇsᴇ ᴠᴀʟᴜᴇ ɪɴ ᴛʜᴇ ғᴏʀᴍᴜʟᴀ ғᴏʀ ᴀᴄᴄᴇʟᴇʀᴀᴛɪᴏɴ:

ᴀ = ᴠ-ᴜ/ᴛ

ᴡᴇ ɢᴇᴛ:

ᴀ = 10-25/5 ᴍ/s²

ᴀ = - 15/5 ᴍ/s²

ᴀ = -3ᴍ/s²

ᴛʜᴜs,

ᴛʜᴇ ᴀᴄᴄᴇʟᴇʀᴀᴛɪᴏɴ ᴏғ ᴄᴀʀ = -3ᴍ/s²

ᴛʜᴇ ɴᴇɢᴀᴛɪᴠᴇ sɪɢɴ ᴏғ ᴀᴄᴄᴇʟᴇʀᴀᴛɪᴏɴ ᴍᴇᴀɴs ᴛʜᴀᴛ ɪᴛ ɪs ʀᴇᴛᴀʀᴅᴀᴛɪᴏɴ

sᴏ,

ᴡᴇ ᴄᴀɴ ᴀʟsᴏ sᴀʏ ᴛʜᴀᴛ

ᴛʜᴇ ᴄᴀʀ ʜᴀs ᴀ ʀᴇᴛᴀʀᴅᴀᴛɪᴏɴ ᴏғ +3ᴍ/s²

be brainly✔

Answer 2

ur ans is in above photos

ʜᴏᴘᴇ ɪᴛ ʜᴇʟᴘs ᴜ☺.....