Question

13. A car accelerates at a rate of 5 m/s*-2. Find the increase
in its velocity in 2 s.​

Answer 1

Answer:

velocity = displacement / time

displacement = 5m/s(-2)

time = 2s

velocity = 5m/s / 2s

velocity = 2.5m/s-2

Answer 2

$\huge\sf\mathbb\color{red}\underline{\colorbox{black}{︎✪AɴSᴡᴇʀ ✪︎}}$

$\bold\red {ɢɪᴠᴇɴ:-}$

• ᴀ ⇢ 5ᴍs-2
• ᴛ =2ᴍs
• ᴠ= ?

$\bold\red {ᴀᴄᴄᴇʟᴀʀᴀᴛɪᴏɴ = ᴄʜᴀɴᴄᴇ \: ɪɴ \: ᴠᴇʟᴏᴄɪᴛʏ/ᴛɪᴍᴇ \: ɪɴᴛᴇʀᴠᴀʟ }$

⇰ ᴄʜᴀɴᴄᴇ ɪɴ ᴠᴇʟᴏᴄɪᴛʏ = ᴀᴄᴄᴇʟᴀʀᴀᴛɪᴏɴ × ᴛɪᴍᴇ ɪɴᴛᴇʀᴠᴀʟ

⇰ 5×2=10ᴍs-2