Homework Help: Physics

Posted by Linda on Wednesday, November 10, 2010 at 1:49pm.

You are the design engineer in charge of the crashworthiness of new automobile models. Cars are tested by smashing them into fixed, massive barriers at 51 km/h (32 mph). A new model of mass 1900 kg takes 0.18 s from the time of impact until it is brought to rest.

Calculate the average force exerted on the car by the barrier.

Calculate the average deceleration of the car.

Physics - bobpursley, Wednesday, November 10, 2010 at 1:53pm
force*time= mass*changevelocity

solve for force.

force= m*a solve for a
Physics - bla, Sunday, November 14, 2010 at 5:36pm
that doesn't work (at least thats what our teacher is telling is)
Physics - Tara, Wednesday, February 16, 2011 at 7:41pm
If you lift a 57.7kg box 2.41m over your head, how much work did you do?
Physics - Nico, Monday, February 21, 2011 at 12:04pm
Read your Notes jeje.. Hope this helps :)

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