Question

Un automovil cuya masa es de 1000kg se desplaza a 80km/h.¿Cual es su energia cinética en joule?

Answer 1

Ec=(1/2)*m*v^2
(80km/h)(1000m/1km)(1h/3600s)=22.22m/s
Ec=(1/2)(1000Kg)(22.22m/s)^2 =246864.2 Kg*m^2/s^2
J=Kg*m^2/s^2