The front end of an automobile has been designed so that upon impact it progress

Question

The front end of an automobile has been designed so that upon impact it progressively crumples by as much as .70m. Suppose that the automobile crashes into a solid brick wall at 80 km/h. During the collision the passengner compartment decelerates over a distance of 0.70m. Assume that the deceleration is constant. What is the magnitude of the deceleration? If the passenger is held by a safety harness, is he likely to survive? (Hint: Compare the deceleration with the accerleration listed of a parachutist in Table 2.2.)

Explanation / Answer

v² = u² + 2 a s v = final velocity = 0 u = initial velocity = 80*10^3 m/sec a = acceleration s = distance travelled = 0.70 m Now just substitute and solve. 0=6.4*10^9+2a(0.70); a=-4.5*10^9m/sec2

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.