Two friends are each driving a car down Highway 101. During a particular 10 s interval, Jodi’s car moves at a constant 60 mph. During that same time interval, Julie’s car transitions from a speed of 20 mph to a speed of 30 mph. Whose car has the greater acceleration?

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.