Wednesday

January 28, 2015

January 28, 2015

Posted by **Sara** on Wednesday, March 23, 2011 at 11:05am.

- Physics -
**drwls**, Wednesday, March 23, 2011 at 11:21amAdd the momentum vectors and divide by the combined mass.

North component of momentum:

= 3000 * 45 cos 45

= 9.55*10^4 mph*lb

East component of momentum:

= -3000*45sin45 + 2000*30

= -9.546*10^4 + 6.00*10^4

= -3.546*10^4 mph*lb

The momentum magnitude is

sqrt[(9.546)^2 +(-3.546)^2]*10^4

= 1.018*10^5 mph*lb

Final velocity is that divided by 5000 lb, or 20.4 mph

If you need the direction, use the ratio of momentum components as the tangent of the angle.

It is about 20 degrees west of north.

**Answer this Question**

**Related Questions**

Physics - Two cars crash into each other at an intersection on a very icy road. ...

physics - A 1,600 kg car traveling north at 10.0 m/s crashes into a 1,400 kg car...

Physics - Momentum of cars at intersection - Two cars of identical mass are ...

Physics - two cars, one with mass m1=1000kg and the other with mass m2= 4000kg ...

Energy and momentum Physics - two cars, one with mass m1=1000kg and the other ...

physics - Two cars approach an ice-covered intersection. One car, of mass 1.22 ...

phyics - If two cars are traveling along a straight road, one behind the other...

physics - Two cars are traveling in opposite directions on a two lane road. Car ...

Physics - Am I correct? Two carts have a compressed spring between them and are ...

physics - Two cars approach an ice-covered intersection. One car, of mass 1.26 ...