An 8kg mass moving at 8 m/s collides with a stationary 5 kg mass. After the collision, both the 8 kg and 5 kg mass move off in the same direction.
If the 8 kg mass is moving at 3 m/s, what is the speed of the 5 kg mass? *

The starship enterprise is caught in a time warp and spock is forced to use the primitive techniques of the 20th century to determine the specific heat capacity of an unknown mineral. the 125-g sample was heated to 96.3°c and placed into a calorimeter containing 85.9 g of water at 20.0°c. the heat capacity of the calorimeter was 14.2 j/k. the final temperature in the calorimeter was 24.5°c. what is the specific heat capacity (in j/g°c) of the mineral? enter to 4 decimal places.