M= 1000 g g= 10 m/s2 h= 10 K. E at GROUND = 400 j M. E = J

the answer is 400j
plz explain how i will rank him or her the brainiest

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.