[填空题]
Suppose a car manufacturer tested its cars for front-end gj snequ.(1b wuu*1 f z/ud08kcollisi gra w1lyp xoca45z6y7v*r3/ sons by hauling them up on a crane an w36/5 ya 1yxorr7l*gc4 svzapd dropping them from a certain height.
(a) Show that the speed just before a car hits the ground, after falling from rest a vertical distance H, is given by $\sqrt{2gH}$ . What height corresponds to a collision at
(b) 60 km/h ? $\approx$ m (Round to the nearest integer)
(c) 100 km/h ? $\approx$ m (Round to the nearest integer)
