Jack drops a stone from the rest off of the top of a bridge that is 20.4 m above the ground. After the stone falls 6.2 m, Jill throws a second stone straight down. Both rocks hit the water at the exact same time. What was the initial velocity of Jill's rock? Assume upward is the positive direction and downward is the negative. (Indicate the direction with the sign of your answer.) _____________________________ m/s 2. A kangaroo can jump over an object 1.69 m high. (a)Calculate its vertical
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.
1. Jack drops a stone from the rest off of the top of a bridge that is 20.4 m above the ground. After the stone falls 6.2 m, Jill throws a second stone straight down. Both rocks hit the water at the exact same time. What was the initial velocity of Jill's rock? Assume upward is the positive direction and downward is the negative. (Indicate the direction with the sign of your answer.)
_____________________________ m/s
2. A kangaroo can jump over an object 1.69 m high.
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