Posted by **Anonymous** on Saturday, April 2, 2011 at 5:42pm.

A car with a mass of 1700 kg is traveling directly northeast (45 degrees between north and east) at a speed of 14m/s (31mph), and collides with a smaller car with a mass of 1300kg that is traveling directly south at a speed of 18m/s (40mph). The two cars stick together during the collision. With what speed and direction does the tangled mess of metal move right after the collision?

- Physics -
**bobpursley**, Saturday, April 2, 2011 at 5:52pm
do conservation of momentum in NS, and EW directions. Notice the final velocity then will be a vector you can determine the angle and magnitude from.

- Physics -
**Henry**, Monday, July 27, 2015 at 1:31pm
M1*V1 + M2*V2 = M1*V + M2*V.

1700*14[45o] + 1300*18[270o]=1700V+1300V

Divide both sides by 100:

17*14[45] + 13*18[270] = 17V + 13V.

238[45] + 234[270] = 30V.

168.3+168.3i -234i = 30V.

168.3 - 65.7i = 30V.

180.7[-21.3o] = 30V.

V = 6.0 m/s[-21.3] = 6.0m/s[21.3o] S. of

E.

## Answer This Question

## Related Questions

- Physics - At an intersection a car of mass 900kg traveling east collides with a ...
- physics - A car of mass 1500 kg traveling at 15.6 m/s loses its brakes and ...
- physics - Two vehicles with the same mass collide and lock together traveling 28...
- physics - Two vehicles with the same mass collide and lock together traveling 28...
- physics - Two cars leave the same point at the same time, each travelling at the...
- physics - Two cars leave the same point at the same time, each travelling at the...
- physics - Two cars approach an ice-covered intersection. One car, of mass 1.26 ...
- Physics - At a busy intersection a 1460-kg car traveling west with a speed of 12...
- physics - 13. A red car of mass m is heading north (direction 0°). It collides ...
- Physics - Two cars collide as shown in the figure. The yellow car is initially ...

More Related Questions