Acar is moving with a constant velocity of 25 m/s. which of the following is true?
a) the force from the engine is greater than all the forces of friction.
b) the net force on the car is zero.
c) the inertia is changing.
d) the forces of friction are proportional to the acceleration of the car.
e) all of the above.

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.