Question

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.

Answer 1

The acceleration is negative when the speed starts to decrease, which is confirmed by the second situation: B) The velocity of a car reduced from 50km/hr over one minute.

Answer 2

B is definitely the answer!!!