Question

() A boy travels a distance 150 m in 1 minute. His speed is 1. 150 ms? 2. 2.5 m s-1 3. 25 m s-1 4. 9 m s-1​

Answer 1

Answer:

Given :-

• A boy travels a distance of 150 m in 1 minutes.

To Find :-

• What is the speed of a boy.

Formula Used :-

$\clubsuit$ Speed Formula :

$\mapsto \sf\boxed{\bold{\pink{Speed =\: \dfrac{Distance}{Time}}}}$

Solution :-

First, we have to convert minutes into seconds :

$\implies \sf Time =\: 1\: minutes$

$\implies \sf Time =\: 60\: seconds\: \: \bigg\lgroup \sf\bold{\pink{1\: minutes =\: 60\: seconds}}\bigg\rgroup$

$\implies \sf \bold{\purple{Time =\: 60\: seconds}}$

Now, we have to find the speed :

Given :

• Distance = 150 m
• Time = 60 seconds

According to the question by using the formula we get,

$\longrightarrow \sf Speed =\: \dfrac{15\cancel{0}}{6\cancel{0}}$

$\longrightarrow \sf Speed =\: \dfrac{15}{6}$

$\longrightarrow \sf\bold{\red{Speed =\: 2.5\: ms^{- 1}}}$

${\small{\bold{\underline{\therefore\: The\: speed\: of\: a\: boy\: is\: 2.5\: ms^{- 1}\: .}}}}$

Hence, the correct options is option no (2) 2.5 ms-¹ .

Answer 2

$\huge\fcolorbox{pink}{black}{\color{pink}{Answer}}$

__________________________________

$\cal\blue{⛥Given:-}$

➺ᴅɪsᴛᴀɴᴄᴇ ᴛʀᴀᴠᴇʟʟᴇᴅ ʙʏ ᴛʜᴇ ʙᴏʏ=150ᴍ

➺ᴛɪᴍᴇ ᴛᴀᴋᴇɴ=1 ᴍɪɴᴜᴛᴇ=>60 sᴇᴄᴏɴᴅs

➺sᴘᴇᴇᴅ=?

__________________________________

$\cal\orange{⛥we\:know:-}$

$➺{Speed=\frac{Distance}{Time}}$

__________________________________

$\cal\purple{⛥Subsitituting\:in\: the\: formula\: we\: get,}$

$⟾{Speed=\frac{150m}{60seconds}}$

$⟾{Speed=\frac{15m}{6seconds}}$

$⟾{Speed=2.5ms^{-1}}$

__________________________________

$\cal\red{⛥Therefore:-}$

➺ᴏᴘᴛɪᴏɴ(2) ${2.5ms^{-1}}$ ɪs ᴛʜᴇ ʀᴇǫᴜɪʀᴇᴅ ᴀɴsᴡᴇʀ.

__________________________________

$\cal\green{⛥Points\: to\: be\: notable:-}$

• ⚘sᴘᴇᴇᴅ ɪs ᴀ ᴍᴇᴀsᴜʀᴇ ᴏғ ʜᴏᴡ ǫᴜɪᴄᴋʟʏ sᴏᴍᴇᴛʜɪɴɢ ᴍᴏᴠᴇs, sᴏ ɪᴛ ɪs ᴄᴀʟᴄᴜʟᴀᴛᴇᴅ ʙʏ ᴅɪᴠɪᴅɪɴɢ ᴅɪsᴛᴀɴᴄᴇ ʙʏ ᴛɪᴍᴇ.

• ⚘ᴛʏᴘɪᴄᴀʟʟʏ, ᴡᴇ ᴍᴇᴀsᴜʀᴇ ᴅɪsᴛᴀɴᴄᴇ ɪɴ ᴍᴇᴛʀᴇs (ᴍ), ᴋɪʟᴏᴍᴇᴛʀᴇs (ᴋᴍ), ᴏʀ ᴍɪʟᴇs, ᴀɴᴅ ᴡᴇ ᴍᴇᴀsᴜʀᴇ ᴛɪᴍᴇ ɪɴ sᴇᴄᴏɴᴅs (s), ᴍɪɴᴜᴛᴇs (ᴍɪɴs) ᴏʀ ʜᴏᴜʀs (ʜ).

• ᴀs ᴀ ʀᴇsᴜʟᴛ, ᴛʜᴇ ᴜɴɪᴛs ᴡᴇ ᴜsᴇ ᴛᴏ ᴍᴇᴀsᴜʀᴇ sᴘᴇᴇᴅ ᴀʀᴇ ᴄᴏᴍᴘᴏᴜɴᴅ ᴜɴɪᴛs  ᴇ.ɢ ᴍ/s ᴏʀ ᴋᴍ/ʜ.

• ⚘sᴘᴇᴇᴅ, ᴅɪsᴛᴀɴᴄᴇ ᴀɴᴅ ᴛɪᴍᴇ ᴄᴀɴ ʙᴇ ᴄᴀʟᴄᴜʟᴀᴛᴇᴅ ᴜsɪɴɢ ᴀ ᴍᴀɢɪᴄ ᴛʀɪᴀɴɢʟᴇ.

• ᴅ (ᴛʜᴇ ᴅɪsᴛᴀɴᴄᴇ) ɢᴏᴇs ɪɴ ᴛʜᴇ ᴛᴏᴘ ᴏғ ᴛʜᴇ ᴛʀɪᴀɴɢʟᴇ, s (sᴘᴇᴇᴅ) ɢᴏᴇs ɪɴ ᴛʜᴇ ʙᴏᴛᴛᴏᴍ ʟᴇғᴛ ᴏғ ᴛʜᴇ ᴛʀɪᴀɴɢʟᴇ ᴀɴᴅ ᴛ(ᴛɪᴍᴇ) ɢᴏᴇs ɪɴ ᴛʜᴇ ʙᴏᴛᴛᴏᴍ ʀɪɢʜᴛ ᴏғ ᴛʜᴇ ᴛʀɪᴀɴɢʟᴇ.

__________________________________

$\fcolorbox{pink}{black}{\color{pink}{Hope\: it\: works}}$