A boy stands on the roof of a 20-m tall building and throws a ball with a speed of 35 m/s at an angle of 40° above the horizontal. Ignore air resistance. Calculate (a) the maximum height above the roof that the ball reaches; (b) the time to reach maximum height; (c) the total time of flight; (d) the velocity of the ball just before it strikes the ground; and (e) the horizontal range from the base of the building to the point where the ball strikes the ground.
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.
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