The velocity of the object at the end of 3.00 seconds is 29.4 m/s.
Find the initial velocity of an object by dividing the time it took the object to travel the specified distance by the total distance. An object at rest has zero velocity and remains so. Such an object does not change its state of motion unless an unbalanced force acts on it. The velocity of a body at rest must be zero, but the acceleration of a body at rest obviously cannot be zero.
Particles thrown vertically upwards will momentarily stop at the highest point of their movement. In free fall the object is affected only by gravitational acceleration. Acceleration is a non-zero value, so the velocity changes and increases as the object falls. This is because acceleration is defined as the rate of change of velocity with respect to time.
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Answer:
no mam
Explanation:
the answer to the question is
To develop this problem it is necessary to apply the concepts related to Broglie hypothesis.
The hypothesis defines that
Where,
P = momentum
h = Planck's constant
The momentum is also defined as,
P = mv
Where,
m = mass
v = Velocity
PART A) Replacing at the first equation
Our values are given as,
Re-arrange to find v, we have:
PART B) From the kinematic equations of movement description we know that velocity is defined as displacement over a period of time, that is
Re-arrange to find t,
the age of the universe.
In an alpha decay, an atom emits an alpha particle. An alpha particle consists of 2 protons and 2 neutrons: this means that during this kind of decay, the original atom loses 2 protons and 2 neutrons from its nucleus.
This also means that the atomic number Z of the element (the atomic number is the number of protons in the nucleus) decreases by 2 units in the process, while the mass number A (the mass number is the sum of the number of protons and neutrons) decreases by 4 units.