A 1200 kg car is traveling 21.1 m/s. It collides with a stationary car of mass 1500 kg, and the two vehicles lock together. What is the speed of the combined cars immediately after the collision? A) 7.5 m/s

B) 16.5 m/s

C) 9.4 m/s

D) 11.8 m/s

C) 9.4 m/s

Explanation:

= Mass of moving car = 1200 kg

= Initial velocity of moving car = 21.1 m/s

= Mass of stationary car = 1500 kg

= Initial velocity of stationary car = 0

v = Velocity of the combined cars

As the momentum in the system is conserved we have

The velocity of the combined mass is 9.4 m/s.

260 miles per hour

explanation: