A football quarterback is stepping straight backward at a speed of 3.1 m/s when he lobs the ball to a receiver 19 m straight downfield. 1. If the ball is thrown at an angle of 25° relative to the ground and is caught at the same height as it is released, what is its initial speed relative to the ground in m/s? 2. How long does it take to get to the receiver in s? 3. What is its maximum height above its point of release in 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.
A football quarterback is stepping straight backward at a speed of 3.1 m/s when he lobs the ball to a receiver 19 m straight downfield.
1. If the ball is thrown at an angle of 25° relative to the ground and is caught at the same height as it is released, what is its initial speed relative to the ground in m/s?
2. How long does it take to get to the receiver in s?
3. What is its maximum height above its point of release in m?
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