14. An open-topped railroad car is coasting along a horizontal track with initial velocity vo. Rain falls vertically into the car at a constant rate. Ignoring air resistance and friction at the wheels, the acceleration a of the car A) is zero. B) is non-zero, and lal increases with time. C) is not zero, and Jal decreases with time. D) is non-zero, and constant in time.
Displacement, Velocity and Acceleration
In classical mechanics, kinematics deals with the motion of a particle. It deals only with the position, velocity, acceleration, and displacement of a particle. It has no concern about the source of motion.
Linear Displacement
The term "displacement" refers to when something shifts away from its original "location," and "linear" refers to a straight line. As a result, “Linear Displacement” can be described as the movement of an object in a straight line along a single axis, for example, from side to side or up and down. Non-contact sensors such as LVDTs and other linear location sensors can calculate linear displacement. Non-contact sensors such as LVDTs and other linear location sensors can calculate linear displacement. Linear displacement is usually measured in millimeters or inches and may be positive or negative.
![14. An open-topped railroad car is coasting along a horizontal track with initial velocity vo. Rain falls vertically
into the car at a constant rate. Ignoring air resistance and friction at the wheels, the acceleration a of the car
A) is zero.
B) is non-zero, and [a] increases with time.
C) is not zero, and a decreases with time.
D) is non-zero, and constant in time.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fbdf8f504-fe9e-4bd2-8c0a-829bf99b478b%2Ff56100d1-33c7-4e5b-a464-cb54bf1f9e61%2Fpg5d3qf_processed.jpeg&w=3840&q=75)
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