Un automóvil que viaja a 50 km/h necesita una distancia de frenado de 16 metros, asumiendo que la fuerza que detiene al automóvil es constante. Si la velocidad inicial fuera 100 km/h, ¿qué distancia necesitaría para detenerse?
A. 26 m.
B. 32 m.
C. 64 m.
D.90 m.

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A100 kg running back runs at 5m/s into a stationary linebacker. it takes 0.5 for the running back to be completely stopped

Consider two less-than-desirable options. in the first you are driving 30 mph and crash head-on into an identical car also going 30 mph. in the second option you are driving 30 mph and crash head-on into a stationary brick wall. in neither case does your car bounce off the thing it hits, and the collision time is the same in both cases. which of these two situations would result in the greatest impact force?