Question

kinetic energy of partical of mass 500g with speed of 10m/s is

Answer 1

KE = 1/2mvsquare

= 0.5×0.5×10×10

= 25 J

Answer 2

kinetic energy =

$\frac{1}{2} \times m \times {v}^{2}$

so

$\frac{1}{2} \times 0.5 \times 10 {}^{2}$

25 J