Airplane flight recorders must be able to survive catastrophic crashes. Therefore, they are typically encased in crash-resistant steel or titanium boxes that are subjected to rigorous testing. One of the tests is an impact shock test, in which the box must survive being thrown at high speeds against a barrier. A 41 kg box is thrown at a speed of 210 m/s and is brought to a halt in a collision that lasts for a time of 6.6 ms. What is the magnitude of the average net force that acts on the box during the colision?
2006-10-06 21:09:10 · 3 answers · asked by Alan l 1 in Education & Reference ➔ Homework Help
Use equations for momentum and impulse.
momentum = mass * velocity
impulse = force * time = change in momentum
momentum = (41 kg) * (210 m/s) = 8610 kg m/s
force = (change in momentum) / time
= (8610 kg m/s) / (0.066 s)
=130455 N
2006-10-06 21:30:28 · answer #1 · answered by buccinator 3 · 0⤊ 0⤋
f=m*a a = v/t That's all you need.
2006-10-07 04:24:04 · answer #2 · answered by gp4rts 7 · 0⤊ 1⤋
uhh... a lot?
2006-10-07 04:14:01 · answer #3 · answered by thehelper 3 · 0⤊ 1⤋