Question

what will be the kinetic energy of a particle if mass of a particle is 3g moving wiith velocity of 3km/s​

Answer 1

Correct Question:-

Find kinetic energy of a particle whose mass is 3g and velocity is 3m/s.

SOLUTION:-

• Mass=m=3g
• Velocity=3m/s

We know that

$\boxed{\sf K.E=\dfrac{1}{2}mv^2}$

$\\ \qquad\quad\sf\hookrightarrow K.E=\dfrac{1}{2}\times 3\times 3^2$

$\\ \qquad\quad\sf\hookrightarrow K E=\dfrac{3\times 9}{2}$

$\\ \qquad\quad\sf\hookrightarrow K.E=\dfrac{27}{2}$

$\\ \qquad\quad\sf\hookrightarrow K.E=13.5J$