Consider to cars traveling directly towards each other. car a has twice the mass of car b. in order for the cars to completely stop when they collide, which of the following is true? (remember, momentum = mass * velocity) car a should have twice the velocity of car b car b should have twice the velocity of car a car a should have 4x the velocity of car b car b should have 4x the velocity of car a

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.