NOKYARD

The hovercrafts simply bounced off of each other after collision… and are still spinning out of control today… assuming a frictionless surface of course.

hint: check the post dates.

Cheese, is the collision elastic?

You just take their mass & velocity and add them together: m1v1 + m2v2 = (m1+m2)v3, which is your new velocity....

Ok what if i change that they were hovercraft's not cars?

no manufacturer makes super tractive tyres in custom sizes - considering a Ford 150 Pick-up truck weighs 2,197kg , a 75kg truck would be around 1:30 scale, the nearest size model trucks are 1:32 scale and only weigh around 3kg

the tyres would have to carry a vehicle 15 times the weight of their intended scale size, deforming the tyre to the point where it could not spin, nor even turn for that matter, on any surface

That's a good one, i should of written that in my exam papers. But then again, what if the tyres were super tractive?

if the surface was indeed frictionless, the vehicles would not be able to attain those velocities - they would just sit there spinning their tyres

exactly where in the Nullarbor Plain is 'middle of nowhere'? and if you found yourself there and you don't have a reception, you could move straight on to dinner.

Haha but what if you're out in the middle of nowhere and you don't have reception?

well? ... did you call yet?

wouldn't it be better to call 000 (911 in North America) to get ambulance, fire and rescue to the scene - rather than to try to figure out some stupid mathematical equation while people might be injured or dying?

Help! If a 75 kg truck is moving on a flat surface at 14 m/s-1, it collides with an oncoming 42kg car traveling 17 m/s-1, assuming the surface is frictionless, define the final momentum of this occurrence.