1. You drop a stone down off a bridge. You are able to count to 4.0 seconds when it finally hits the water. How high is the bridge? 2. Niagara Falls is 51 meters high. If you dropped a ball off the ledge, how much time would it take it to hit the water? 3. If you dropped your cell phone from a height of 1.20 m above the ground, with what speed would it strike the ground? 4. An astronaut drops a rock on planet X from a height of 0.72 m d. If it takes 0.63 seconds for the rock to strike the ground, what is the acceleration on planet X? 5. You drop your cell phone while in the bathroom in front of the mirror while the water is running in the sink below. If you are 0.45 meters above the sink, how long do you have before your cell phone is a gonner. 6. A baseball dropped from the roof of a tall building takes 3.1 seconds to hit the ground. How tall is the building? [Neglect friction.] 7. A ball thrown vertically upward reaches a maximum height of 30 meters above the surface of Earth. At its maximum height, the speed of the ball is??? 8. A rock falls from rest off a high cliff. How far has the rock fallen when its speed is 39.2 meters per second?
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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