Given what we know, we can confirm that the change in kinetic energy is a negative value, given that the <u>final value </u>will be zero.
<h3>What is kinetic energy?</h3>
- This is the energy of movement.
- As the car is in motion, it has kinetic energy.
- However, as the car slows down, it loses this energy.
- Once the car stops,<em><u> it no longer has kinetic energy. </u></em>
- Given that the change in kinetic energy is the <em><u>final value </u></em>minus the <em><u>initial</u></em>, and the final is zero, this will cause the change in kinetic energy for the car to be a negative value.
Therefore, since kinetic energy is the energy of movement, we can confirm that the change in kinetic energy for the car will be a negative value caused by the car coming to a complete stop.
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True, it can be seen from Earth at times
So the question is asking for time.
Time= distance / speed
120/30
4
Therefore answer is d
Answer:
The answer is E) 20kPa
Explanation:
Here we use the definition of Pressure: Pressure is a physical quantity that measures the projection of force in the perpendicular direction per unit area. In this case, wehave a 200N Force over a 100cm^2 Area
In order to have the pressure in international units we need to convert those cm^2 to m^2 this way:
We know 100cm is equal to 1m
In this case, the area will be equal to 0,01m^2
With this information we use the Pressure equation, which based on the definition will be:
Solving:
Then P is the same as 20kPa