A 3,150 kg car drives down a 685 m long on-ramp onto a highway. The car accelerates straight forward from a speed of 12.5 m/s up to 32.0 m/s when it reaches the highway. What is magnitude of the net force, Fnet acting on the car?

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.