In: Physics
1.1 While a car travels around a circular track at a constant speed its, which of the following is true?
A) it has non-zero acceleration
B) it has zero acceleration
C) it has zero velocity, because the speed is constant
D) It has zero inertia
1.2. How many of the following statements are impossible?
(a) An object that has zero velocity and a non-zero acceleration.
(b) An object that travels with a constant velocity and a varying acceleration.
(c) An object that travels with a constant acceleration and a varying velocity.
1.3. For a freely falling object, how many of the following statements are true?
(a) the distance fallen during each second keeps increasing;
(b) the speed keeps increasing;
(c) the change in speed during each second keeps increasing;
(d) the acceleration keeps increasing.