5. An aluminum block of mass 0.3kg at a temperature of 85°C is dropped into 0.2kg of water at 15°C. Calculate the final steady temperature attained by the block and the water. (ew=4200 and aluminum= 900) entered to the of water and the temperature of the water increased​

In which situation is the acceleration of a car negative? question 5 options: a)the velocity of a car was 75 km/hr over 4 hours. b)the velocity of a car reduced from 50 km/hr over one minute. c)the velocity of a car increased from 40 km.h to 75 km/h over 15 minutes. d)the velocity of a car was 45 km/hr at 2: 00pm and at 4: 00pm its velocity was 85 km/ht.