Problems 35 through 40 show a free-body diagram. For each:
a. Identify the direction of the acceleration vector au and show it as a vector next to your diagram. Or, if appropriate, write
b. If possible, identify the direction of the velocity vector and show it as a labeled vector.
c. Write a short description of a real object for which this is the
correct free-body diagram. Use Examples 5.4, 5.5, and 5.6 as
models of what a description should be like.
Free-body diagram of an object such as bullock cart is given here that is been dragged along negative x-axis.
According to the given diagram, there is a non-zero net force along negative x-axis. So, the direction of acceleration vector should be directed from left to right.
The acceleration vector is shown in the given diagram:
The velocity vector is labelled in the free body diagram given below:
The free-body diagram states that an object for example a bullock cart is been pulled out through a muddy road. So, there is a tension force by the rope with which the cart is dragged out acts on the cart and the cart is accelerating from right to left.
A rubber ball bounces. We’d like to understand how the ball bounces. a. A rubber ball has been dropped and is bouncing off the floor. Draw a motion diagram of the ball during the brief time interval that it is in contact with the floor. Show 4 or 5 frames as the ball compresses, then another 4 or 5 frames as it expands. What is the direction of a u during each of these parts of the motion? b. Draw a picture of the ball in contact with the floor and identify all forces acting on the ball. c. Draw a free-body diagram of the ball during its contact with the ground. Is there a net force acting on the ball? If so, in which direction? d. Write a paragraph in which you describe what you learned from parts a to c and in which you answer the question: How does a ball bounce?
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