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- It is known that if an object is thrown up with a speed of V, it will land at the same spot with speed V, only the velocity will be downward.
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May 26, 2023 · Answer and Explanation: When an object is thrown vertically upward, its velocity decreases at a rate equal to the acceleration due to the earth’s gravity. The upward velocity gets reduced to zero momentarily and the object attains its highest position at that moment.
May 25, 2023 · Answer and Explanation: When an object is thrown vertically upward, its velocity decreases at a rate equal to the acceleration due to the earth’s gravity. The upward velocity gets reduced to zero momentarily and the object attains its highest position at that moment.
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- 2016
- A hammer and a feather will fall with the same constant acceleration if air resistance is considered negligible. This is a general characteristic of gravity not unique to Earth, as astronaut David R. Scott demonstrated on the Moon in 1971, where the acceleration due to gravity is only 1.67 m/s2.
- We are asked to determine the position [latex]{y}[/latex] at various times. It is reasonable to take the initial position [latex]{y_0}[/latex] to be zero.
- Vertical position, vertical velocity, and vertical acceleration vs. time for a rock thrown vertically up at the edge of a cliff. Notice that velocity changes linearly with time and that acceleration is constant.
- Since up is positive, the final position of the rock will be negative because it finishes below the starting point at [latex]{y_0=0}[/latex] .
Projectile motion is the motion of an object thrown (projected) into the air when, after the initial force that launches the object, air resistance is negligible and the only other force that object experiences is the force of gravity.
What happens if the person on the cliff throws the rock straight down, instead of straight up? To explore this question, calculate the velocity of the rock when it is 5.10 m below the starting point, and has been thrown downward with an initial speed of 13.0 m/s.
The most remarkable and unexpected fact about falling objects is that, if air resistance and friction are negligible, then in a given location all objects fall toward the center of Earth with the same constant acceleration, independent of their mass.
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If an object is thrown straight up and air resistance is negligible, then its speed when it returns to the starting point is the same as when it was released. If air resistance were not negligible, how would its speed upon return compare with its initial speed?
