1. A boy on a 20-m high platform throws a ball at a distance of 5 m. At what speed is the ball thrown? (See the diagram) Solution: Given: dx Find : Vox (Vox = 4) Since d = 5 m, then we need to find the time t, yet from d = X y 5 m; horizontal distance dy = 20 m; vertical distance t = √ Hence, Vox = dx t /2(20) 9.8 5m sec. m/s gta, or or t = √ 2dy g 20m 5 m
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.
General Physics
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revolutions per (a) What is its centripetal acceleration? (b) What force is to be exerted on the string?
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