Answer:
Explanation:
The kinetic energy of an object is given by
where
m is the mass of the object
v is its speed
For the car in this problem,
m = 1400 kg
v = 30 m/s
Therefore, the kinetic energy of the car is
The correct answer is B. Water vapor condensing as it rises into cooler air
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A. The magnitude of the spring force (in N) acting upon the object is 15.9 N
B. The magnitude of the object's acceleration (in m/s²) is 30.58 m/s²
C. The direction of the acceleration vector points toward the equilibrium position (i.e., to the left in the figure).
<h3>A. How to determine the force </h3>
- Extension (e) = 0.150 m
- Spring constant (K) = 106 N/m
- Force (F) = ?
F = Ke
F = 106 × 0.15
F = 15.9 N
<h3>B. How to determine the acceleration</h3>
- Mass (m) = 0.52 Kg
- Force (F) = 15. 9 N
- Acceleration (a) =?
F = ma
Divide both sides by m
a = F / m
a = 15.9 / 0.52
a = 30.58 m/s²
<h3>C. How to determine the direction of the acceleration vector</h3>
Considering the diagram, we can see that the spring was pulled away from the equilibrium point.
Thus, when the spring is released, it will move toward the equilibrium point. This is also true about the acceleration.
Therefore, we can conclude that the direction of the acceleration vector is towards the equilibrium point.
Learn more about spring constant:
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An example of objects that move in revolution is a ball on a string end or a planet that is moving around a star.
<u>Explanation:</u>
Rotation is the movement of an object in circular path. When the rotation's axis does not pass through the object, it is revolution. The axis of rotation may also be out of the object completely. This results in making the object to revolve around the rotation's axis. An object going in an elliptical path is revolution.It is the total time taken to complete one orbit.
Some of the examples for an object revolving are the following:
- A ball on the string end.
- A planet that revolves around a star. An orbit is a term that is used to describe this type of motion.