3. a) A boy throws a stone straight upward with an initial speed of 15 m/s. What maximum height will the stone reach before falling back down? b) What would be the maximum height of the stone if the boy and the stone were on the surface of the Moon, where the acceleration due to gravity is only that of the Earth's? 4. In the figure below, a student at the window on the second floor of a dorm sees his Physics teacher walking on the sidewalk beside the building. He drops a water balloon from 18 m above the ground when the teacher is 1 m away from the point directly beneath the window. If the teacher is 1.7 m tall and walks at a constant velocity of 0.450 m/s, would the water balloon hit her? If not, how close does it come? 18.0 m 0.450 m/s 1.00 m 1.70 m

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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.