\(36\left(\dfrac{km}{h}\right)=10\left(\dfrac{m}{s}\right)\)
\(a=\dfrac{v_2-v_0^2}{2s}=\dfrac{0-10^2}{2.100}=-0,5\left(\dfrac{m}{s^2}\right)\)
Tóm tắt: \(v_0=36\)km/h=10m/s\(,v=0\)m/s\(,S=100m\)
\(a=?\)
Bài giải:
Gia tốc vật:
\(v^2-v_0^2=2aS\Rightarrow a=\dfrac{v^2-v_0^2}{2S}=\dfrac{0-10^2}{2\cdot100}=-0,5\)m/s2