Aspeed-time graph shows that a car moves at 20 m/s for 15 s. the car's speed then steadily decreases until it comes to a stop at 40 s. which of the following describes the slope of the speed-time graph from 15 s to 40 s?

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.