contestada

A car has a mass of 2500 kg and accelerates from rest to a speed of 10,0 m/s in 5,0 s. The average
power of the engine during this acceleration is...?

Respuesta :

indrawboy

P = W/t

W = ΔPE = ΔKE

[tex]\tt P=\dfrac{\Delta KE}{t}\rightarrow v_1=0,KE_1=0\\\\P=\dfrac{KE_2-KE_1}{t}\\\\P=\dfrac{\frac{1}{2}\times 2500\times 10^2-0 }{5}=2.5\times 10^4~watt[/tex]

Otras preguntas