Question
in an air bag test a car traveling at 100km/h is remotely driven into a brick wall. suppose an identical car is dropped onto a hard surface. from what height would the car have to be dropped to have the same impact that with the brick wall?
Answers
100 km/h = 100000/3600 = 27.78 m/s
Equate kinetic energy to potential energy at equivalent height, h
mgh = (1/2)mv²
h=v²/(2g)
=27.78²/(2*9.8)
=39.4 m
Equate kinetic energy to potential energy at equivalent height, h
mgh = (1/2)mv²
h=v²/(2g)
=27.78²/(2*9.8)
=39.4 m
Related Questions
An automobile of mass 2000 kg is driven into a brick wall in a safety test. The bumper behaves like...
An automobile having a mass of 1330 kg
is driven into a brick wall in a safety test.
The bumper be...
A car travels at a constant speed 50km/h for 100km. It then speeds up to 100 km/h and is driven anot...