A 700 kg car is moving at 10 m/s west rear ends a 500 kg car at rest. They both stuck together after the collision and continue to move. How fast are they both moving together after the collision?

Explanation:

The collision is inelastic and can be described by the Principle of Momentum Conservation:

The speed after the collision is:

e

explanation:

there is no change in the electric potential energy as it is in rest on both conditions.

co2reflects heat radiation back to earth buning coal and oil emits co2 globe warms