It would be kinetic energy. Let's say the book is weighs 10 Newtons you need to use a force of 10 Newtons to lift the book. In other words it's positive. As you move the book you're giving it energy. Namely potential energy which will turn to kinetic energy if you let it go. So you're changing it's position and energy.
False because the physics is like a science and it’s like a math
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An atom can be identified by its elemental number. The atomic number is equal to the number of protons located in the nucleus. The protons are positively charged particles. Each ion has a specific place in an atom. Electrons are located outside of the nucleus. The electrons are arranged by the electron shells in the atom(?). Each element has electrons that can only hold a certain number of electrons for each energy level. Electrons have many shells - the electron cloud/shell with the most energy is known as the valence(?). The valence electrons are located at the outermost shell of the electron cloud.
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Answer:
1a) True 1b) False
Explanation:
The definition of a car's velocity is the change of displacement between time, from here we can see that this is a vector, this means that it has magnitude and direction.
The definition of speed is the change of distance between the unit of time, as we see this magnitude is a scalar since distance is a scalar.
1 a) the car has the same speed, True since the magnitude is a scalar
1 b) the cars have the same speed. False since the magnitude is a vector, even if it has the same module it has different direction
