Help if two objects were moving to a junction?

Question

If two objects were moving to a junction the first at 70 miles an hour the second approached it crossing (like at a T Junction) at a speed of 20miles an hour and they hit. would the injuries be worst than if it was hit at 70 striaght on? And what is the speed at impact?

Answer 1

I don't know the speed of impact, but the injuries would not be worse than a head on because momentum would carry both objects in the same direction after impact. In a head on collision, the faster and/or heavier object will stop the smaller/slower object and then move it in the opposite direction it was travelling.

Answer 2

Have you ever resolved forces? That's what you need to do (or in this case resolve speeds). If you draw an x-y graph, then the first car was travelling at 70 along the x axis, and the second car was travelling at 20 along the y axis. So at impact the speed will be 70 in the x direction and 20 in the y direction. If you draw a line 70 along the x axis and from the end of that 20 up the y axis, then the distance from the beginning to the end is the overall speed at impact (I'll let you work that out, as you should be able to. Hint: it's more than 70).

As to whether the injuries will be worse than a 70 straight on hit: I don't know. I would guess at no: as if they hit straight on then both cars would be stopped by the impact, which would cause severe injuries. With the sideways hit the cars would be deflected from their original path, and therefore wouldn't instantly stop, and so wouldn't cause as much damage. The other argument is that seeing as the speed at impact is greater the injuries will be greater. Up to you which you choose.

Answer 3

The question assumes too much.
What injuries? Two objects could be anything.
If the 70 mph object is a train filled with passengers and the 20 mph object is a Jack Rabbit unlucky enough to get smacked while scampering along. The injury to the Rabbit is probably fatal and real messy.
But if the 70 mph object is a stream of water from a water cannon and it hits a Bradley fighting vehicle moving 20 mph, I'd say drop the cannon and RUN!
As for speed at impact, you stated 70 and 20 miles per hour, correct? What?!

Answer 4

You would need more information. Who hit who? Since they are at a junction, the the impact would be more if the 70 mph hit the 20. If the 20 hit the 70 then the impact would be less. If they hit head on then the impact would be more like 90 mph.

Answer 5

I don't know what injuries would be sustained, but the force of the impact depends on this formula: Force = Mass X Acceleration. You've given me only the acceleration variable and I need its mass too in order to give you a more accurate description. This applies to the head on collision as well, without the mass I cannot determine if the would be more severe. The speed of impact would be at 140 mph but without the mass, it means little because if a bee hits a car both heading at 70mph at a T junction or head on, who will win, not the bee. The mass is crucial.

Answer 6

New Orleans (because that is as previous as New England), maximum New England cities and cities have numerous rumors of ghost, in spite of the undeniable fact that the most haunted city in New England, is Salem Massachusetts, using Salem witch trials contained in the 1600's. Savanna Georgia, And Charleston, south Carolina is rather haunted. i ought to visit the French Quarter in New Orleans and take a ghost excursion. The have an same component in Charleston, and Savanna yet Ive under no circumstances been to those.

Answer 7

possible loss of human life
would be a tragic loss if that life was yours

Answer 8

I advise you to see a counselor posthaste

Answer 9

run for he hills.

Answer 10

injuries to what???