2. The speed of light in a vacuum is c = 3 × 10 8 m / s, and the distance from the Earth to the Sun is R ≈ 150 × 10 6 km . a. A light-minute is the distance that light travels in 1 minute. What is a light minute in meters? b. Express the Earth-Sun distance R in terms of light-minutes. c. How much time does it take for light to travel from the Sun to the Earth?
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.
2. The
a. A light-minute is the distance that light travels in 1 minute. What is a light minute in meters?
b. Express the Earth-Sun distance R in terms of light-minutes.
c. How much time does it take for light to travel from the Sun to the Earth?
3. (1.39) Tectonic plates are large segments of Earth's crust that move slowly. Suppose a plate has average speed of v = 4.0 cm / year .
a. What distance does the plate move in 1.0 s?
b. Express the speed v in km/million year .
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