Posted by **James** on Wednesday, May 23, 2012 at 3:41pm.

7. Two cars are moving. The first car has twice the mass of the second car, but only half as much kinetic energy. Then, both cars increase their speed by 8.00 m/s. They then have the same kinetic energy. The original speeds of the two cars are, respectively,

A. v1 = 5.66 m/s, v2 = 11.3 m/s.

B. v1 = 14.1 m/s, v2 = 7.07 m/s.

C. v1 = 11.3 m/s, v2 = 5.66 m/s.

D. v1 = 22.6 m/s, v2 = 11.3 m/s.

E. v1 = 14.1 m/s, v2 = 22.6 m/s.

## Answer this Question

## Related Questions

- Physics - Two cars are moving. The first car has twice the mass of the second ...
- Physics - Two cars are moving. The first car has twice the mass of the second ...
- Physics - Please Help - Two cars are moving. The first car has twice the mass of...
- Physics - Please Help - Two cars are moving. The first car has twice the mass of...
- Physics - Two cars are moving. The first car has twice the mass of the second ...
- Physics - Two cars are moving. The first car has twice the mass of the second ...
- Univ-Phys - One car has twice the mass of a second car, but only half as much ...
- Physics - One car has twice the maqss of a second car, but only half as much ...
- Physics (algebra bit) - I do not see how to do this problem One car has twice ...
- physics - Please decide which of the following statements for car collisions are...