Question

se da:
masa= 15kg
viteza=20m/s

trebue sa aflam energia cinetica?

Answer 1

$E_{c}= \frac{ m* v^{2} }{2}= \frac{15kg*400 \frac{ m^{2} }{ s^{2} } }{2}=3000J.$

Answer 2

Formula Energiei cinetice este :

$E_c= \frac{m\cdot v^2}{2}$

Deci, $E_c= \frac{15kg\cdot(20m/s)^2}{2} = \frac{15\cdot400}{2}= \boxed{\boxed{3000J}}$