Answer:
The net force is 392N, pointing down.
Explanation:
The net force is the sum of all forces acting on the rock, namely the gravity ("+" acting downward) and the friction force due to air resistance ("-" acting upward):

The net force is 392N and pointing down (positive)/
Thus, area is the product of two lengths and so has dimension L2, or length squared.
They remap things and check what changes happened.
Exercise is a vigorous activity that tends to help us to burn calories and loose weight in the process.
<h3>What is exercise?</h3>
Exercise is a vigorous activity that tends to help us to burn calories and loose weight in the process. There is no quick way to loose weight because the calories were added on gradually and must also be lost gradually.
Before and after photos does not show the loss in calories. This can only be determined by measurement.
Before you buy exercise equipment;
- Ensure that the equipment meets your unique needs
- Ensure that you can afford it
- Ensure that you have enough space to contain the equipment
An example of an exercise equipment is a stationary bicycle. It works when you sit or stand on it and cycle repeatedly though it doesn't move. I am skeptical about it because it may not help you burn a lot of calories except you use it for long periods of time.
Learn more about exercise:brainly.com/question/13128077
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