In terms of impulse and momentum

[angel_romano]

In terms of impulse and momentum...

In terms of impulse and momentum...

why are padded dashboards safer in automobiles?

why are nylon ropes, which stretch considerably under stress, favored by moutain climbers?

why is it preferred that railroad cars be loosely coupled with slack between cars?

 

[moose]

THis is probably a homework question?What are all of your equations for impulse?

Also, what does padding or stretching *do* or *cause*?

 

[quicknote]

In terms of impulse and momentum, padded dashboards are safer in automobiles because they increase the time of impact in a collision. This reduces the force exerted on the passengers, decreasing the impulse and therefore reducing the risk of injury. The padding also absorbs some of the momentum of the impact, further reducing the force exerted on the passengers.

Nylon ropes are favored by mountain climbers because they can stretch significantly under stress. This allows them to absorb the momentum of a fall, reducing the force exerted on the climber and decreasing the risk of injury.

It is preferred that railroad cars be loosely coupled and have slack between them because this allows for a longer time of impact in the event of a collision. This reduces the force exerted on the cars and decreases the impulse, reducing the risk of damage or derailment. It also allows for more flexibility in the movement of the train, reducing the chance of sudden changes in momentum.