A 328-kg car moving at 19.1 m/s in the +x direction hits from behind a second car moving at 13.0 M/S. In the same direction.If the second car has a mass of 790kg. And a speed of 15.1 m/s.
Right after the collision,what is the velocity of the first car after this sudden collision?
A)14.0 m/s
B)18.2 m/s
C)24.2 m/s
D)-14.0 m/s

Question

A 328-kg car moving at 19.1 m/s in the +x direction hits from behind a second car moving at 13.0 M/S.  In the same direction.If the second car has a mass of 790kg.  And a speed of 15.1 m/s. 
Right after the collision,what is the velocity of the first car after this sudden collision?
A)14.0 m/s
B)18.2 m/s
C)24.2 m/s
D)-14.0 m/s

Quizplus · Accepted Answer

Using the conservation of momentum, the initial momentum of the system is equal to the final momentum. Solving for the velocity of the first car after the collision gives approximately 14.0 m/s.

A 328-Kg Car Moving at 19