Hi!
The answer is 8 m/s^2
<h3>Explanation:</h3>
Acceleration is defined as the rate of change of an object's velocity, per unit time. Meaning, the rate at which an object is increasing/decreasing its velocity with the passage of time in a given period.
If an object is moving at constant velocity, its acceleration would be 0, because there is no change in velocity. In our case, the velocity is increasing, and to calculate this, we will use a simple formula,
acceleration = change in velocity / time
and change in velocity is calculated by subtracting the value of initial velocity (u) from final velocity (v).
<h3>Our known values are:</h3>
u = 7m/s
v = 15m/s
t= 1s
a = ?
<h3>Putting the values in the equation for acceleration:</h3>
a = u - v / t
a = 15 - 7 / 1
<u>a = 8 m/s^2</u>
Hope this helps!
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Potassium is element number 19, so it has 19 protons and 19 electrons in the neutral atom. It has therefore 39-19 = 20 Neutrons.
Explanation:
The chemical formula for water is H2O which means that every molecule of water has 2 atoms of hydrogen
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One valuable fossil fuel is natural gas. It is a cleaner-burning fuel source.