Question

a body of mass 20 kg is constant motion with a velocity of 5 metre per second calculate its kinetic energy​

Answer 1

$\large \sf \red{Given :-}$

• Mass = 20 kg

• Velocity = 5 m/s

To Find :-

kinetic energy

Solution :-

Here,

We have to find Kinetic energy. So, By using the formula

$\bf\red{K_{e} = \dfrac{1}2 \times m \times v^2}$

$\sf K_e = \dfrac{1}{2} \times 20 \times 5^2$

$\orange{\sf K_e = 10 \times 25K}$

Hence, The kinetic energy is 250 J.

Know More :-

• Joule (J) is the SI unit of energy.

• meter per second is the SI unit of velocity

• kilogram is the SI unit of mass.

Answer 2

$\huge{\bold{\red{\mathbb{QUESTION:}}}}$

ᴀ ʙᴏᴅʏ ᴏꜰ ᴍᴀꜱꜱ 20 ᴋɢ ɪꜱ ᴄᴏɴꜱᴛᴀɴᴛ ᴍᴏᴛɪᴏɴ ᴡɪᴛʜ ᴀ ᴠᴇʟᴏᴄɪᴛʏ ᴏꜰ 5 ᴍᴇᴛʀᴇ ᴘᴇʀ ꜱᴇᴄᴏɴᴅ ᴄᴀʟᴄᴜʟᴀᴛᴇ ɪᴛꜱ ᴋɪɴᴇᴛɪᴄ ᴇɴᴇʀɢʏ.

$\huge{\bold{\red{\mathcal{ANSWER:}}}}$

$\huge{\mathfrak{500 \: J}}$

${\huge{\underline{\bf{\pink{❥Solution}}}}}$

$\footnotesize\bold\red{\overbrace{\underbrace \mathbb\blue{Kinetic \: \: Energy \: \: = \: \: \frac{1}{2} {mv}^{2}}}}$

$\footnotesize\bold\pink{\overbrace{\underbrace \mathbb\purple{→\frac{1}{2} \times 20 \times 5 \times 5}}}$

$\footnotesize\bold\green{\overbrace{\underbrace \mathbb\red{→500 \: J \: \: Or \: \: Joule}}}$