Chemistry

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A car traveled at a constant velocity of 70 mph from noon to 2:00 pm. At 3:00 pm the velocity of the car was 80 mph; and finally at 4:30 pm the velocity of the car was 40 mph.

Which statement accurately describes the acceleration of the car?

A) The car had a positive acceleration the entire time.

B) The car had a negative acceleration from noon to 2:00 pm.

C) The acceleration of the car from 3:00 pm to 4:30 pm was zero

D) The car had a positive acceleration between 2:00 pm and 3:00 pm.

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