Question

m=2t
V=36 km/h
Ec=?
Calcluati repede please

Answer 1

$E_c=\frac{1}{2}mv^2\\E_c=\frac{1}{2}\cdot2t\cdot(36\frac{km}{h})^2\\E_c=1000kg\cdot 100\frac{m^2}{s^2}=10^5J$

Answer 2

energia cinetica = mv² / 2 

masa = 2 tone = 2000 kg 

viteza = 36 km/h = 36000 m / 3600 s = 10 m/s 

Ec = 2000 kg x (10m/s)² / 2 = 100 000 kg m²/s² = 100 000 J = 100 KJ