Physics, 23.12.2019 19:31 2023greenlanden
An object is projected vertically upward from ground level. it rises to a maximum height h. if air resistance is negligible, which of the following must be true for the object when it is at a height h/2? 1. its speed is half its initial speed 2. its kinetic energy is half of its initial ke 3. its potential energy is half of its initial potential energy 4. itrs total mechanical energy is half of its initial value 5. its total mechanical energy is half of its value at the highest point
Answers: 1
Physics, 22.06.2019 11:00
Which of the following are guidelines to follow for obtaining accurate observations
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Physics, 22.06.2019 17:20
In a system with only a single force acting upon a body, what is the relationship between the change in kinetic energy and the work done by the force? answers: work is equal to the change in kinetic energy.work depends on the square of the change in potential energy.work is equal to the negative of the change in kinetic energy.work is equal to the square of the change in kinetic energy
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Physics, 23.06.2019 00:30
Why does the equilibrium position of the spring change when a mass is added to the spring? will the mass oscillate around the new equilibrium position of the spring or the previous position without a mass attached to the spring? if the equilibrium position of the spring changes by 20 cm (assuming no initial mass) when a mass is added to the spring with constant 4.9 kg/s^2, what is the mass of the object attached to the spring?
Answers: 1
An object is projected vertically upward from ground level. it rises to a maximum height h. if air r...
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