Question

A vehicle of mass 350kg is moving with a velocity 20m/s. Find its kinetic energy​

Answer 1

Answer:

• $\sf{70000\:J}$

Explanation:

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

• $\sf Mass \:of\: the vehicle = 350\:kg$
• $\sf Velocity = 20\:m/s$

$\:{\underline{\sf{\orange{\:\:\:\: Tofind\: :-\:\:\:}}}}$

• $\textsf{Kinetic energy}$

$\:\:\:{\underline{\sf{\blue{\:\:\:\: Calculation\: :-\:\:\:}}}}$

$\small\:\:{\boxed{\rm{\green{K.E = \dfrac{1}{2} mv^2}}}}$

$\sf Where,$

• $\sf m = mass$
• $\sf v = velocity$

$\:\:\:\dashrightarrow\:\:\sf{K.E = \dfrac{1}{\cancel{2}} \times\cancel{350}\times (20)^2}$

$\:\:\:\:\:\dashrightarrow\:\:\sf{K.E = 175\times (20)^2}$

$\:\:\:\:\:\:\:\dashrightarrow\:\:\sf{K.E = 175\times 400}$

$\:\:\:\:\:\:\:\:\:\dashrightarrow\:\:\sf{K.E = 70000\:J}$

$\tiny\bigstar\:{\underline{\textbf{\textsf{\purple{\:\:\: Kinetic \ energy \ of \ the \ vehicle \ is \ 70000\:J\:\:\:\:\:}}}}}$

Answer 2

Answer:

70000 kgm/s

Explanation:

We know that $KE=\frac{1}{2}mv^{2}$

Hence, KE= 1/2* 350*20*20

KE= 350*20*10

KE=70000 kgm/s

Hope it helps

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