Explanation:
<u>Using Equations of Motion</u> :
(1) v = u + at
24 = 6.5 + a * 210
<u>a (Acceleration) = 0.083 m/s^2 </u>
<u>(</u><u>2</u><u>)</u><u> </u> v^2 = u^2 + 2aS
S = 576 - 42.25 / 0.166
<u>S (Distance travelled) = 3215.3 m </u>
(Option A seems a typo since the answer is 3215.3 m)
<u>Answer:</u>
<em>The chemical reactions involves changes in energy due to the changes in the breaking and building of bonds.</em>
<u>Explanation:</u>
The changes in energy that chemical reactions involves are:
- <em>Endothermic(absorbing) chemical reactions.</em>
- <em>Exothermic(releasing) chemical reactions. </em>
Endothermic: The chemical reactions which absorbs the energy those chemical reactions are called endothermic chemical reactions.
Exothermic: The chemical reactions which releases the energy those chemical reactions are called exothermic chemical reactions.
The similarity in the reactions is both reactions are related to the change in energy. In one reaction the energy is absorbing and in another reaction the energy is releasing.
Answer:
Kinematics is the study of how things move while dynamics is the study of forces and motion
Answer:
The wolf's kinetic energy is 12000 J.
Explanation:
Kinetic energy is calculated as follows:
![KE = \frac{1}{2} mv^2](https://tex.z-dn.net/?f=KE%20%3D%20%5Cfrac%7B1%7D%7B2%7D%20mv%5E2)
Where m stands for mass (in kg) and v for velocity in m/s, thus:
![KE = \frac{1}{2} *60*20^2 = 12000](https://tex.z-dn.net/?f=KE%20%3D%20%5Cfrac%7B1%7D%7B2%7D%20%2A60%2A20%5E2%20%3D%2012000)
<span>Supercooling
is lowering the temperature of liquid below its freezing point. This is also
known as the cooling of liquid. Supercooling can be minimized by cooling the
liquid and steering the liquid fast while it is freezing. Freezers in the
refrigerators shows the example activity of supercooling.</span>