A ball is thrown straight up. It passes a 2.00-m-highwindow 7.50 m off the ground on its path up and takes 0.312s to go past the window. What was the ball’s initial velocity?Hint: First consider only the distance along the window, andsolve for the ball's velocity at the bottom of the window. Next,consider only the distance from the ground to the bottom ofthe window, and solve for the initial velocity using the velocityat the bottom of the window as the final velocity.
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.
A ball is thrown straight up. It passes a 2.00-m-high
window 7.50 m off the ground on its path up and takes 0.312
s to go past the window. What was the ball’s initial velocity?
Hint: First consider only the distance along the window, and
solve for the ball's velocity at the bottom of the window. Next,
consider only the distance from the ground to the bottom of
the window, and solve for the initial velocity using the velocity
at the bottom of the window as the final velocity.
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