8. In the following situations, which objects most likely has a constant speed? A. A vehicle that speeds up when the light turns green B. A vehicle that slows down to a stop due to a red light C. A vehicle traveling at 80 mph on the freeway D. A vehicle that makes a u-turn
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.
8. In the following situations, which objects most likely has a constant speed?
A. A vehicle that speeds up when the light turns green
B. A vehicle that slows down to a stop due to a red light
C. A vehicle traveling at 80 mph on the freeway
D. A vehicle that makes a u-turn
9. When calculating an object’s velocity, you must first consider its
A. Instantaneous speed C. Average speed
B. Distance D. Displacement
10. Which of the following has an instantaneous velocity?
A. An ostrich running 70 km/hr west
B. A cat running at 5 mph
C. At t= 2 s, a car is traveling 10 m/s north
D. At t=6 s, a man is walking 4 m/s
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