Answer:
A-B-C
Explanation:
Depends if you have good taste.
Answer: C. Acceleration
Explanation:
Acceleration is defined as the variation of Velocity in time :
In addition, acceleration is a vector quantity (like velocity) and as a vctor it has magnitude and direction. <u>When one of this aspects changes (or both) acceleration changes as well.</u>
So, if the car keeps the same speed () but changes its direction, its acceleration changes.
I could be very wrong here but, I believe the answer to be "C" average orbital radii.
Answer:
.
Explanation:
The box is sliding with a constant speed in a fixed direction (to the right.) In other words the velocity of this box is constant. Hence, this box would be in a translational equilibrium. The acceleration of this box would be zero.
By Newton's Second Law of motion, the net force on this box would be . In other words, forces on this box are balanced.
The question is asking for the size of the friction on the box. Assuming that the floor is horizontal. The friction on this box would also be horizontal,
The only other force that could balance that friction would be the push to the right. The direction of this push is horizontal (to the right.) Hence, the entirety of that would be in the horizontal direction.
Thus, forces on this box in the horizontal direction would be:
- The push to the right.
- Friction that opposes the rightward motion of the box (that is, to the left.)
Since these two forces must balance each other, the size of the friction would also be .