Chapter 5: Q 5. (page 127)
An arrow has just been shot from a bow and is now traveling
horizontally. Air resistance is not negligible. Identify the forces on
the arrow.
Short Answer
two forces are there Drag and weight
Chapter 5: Q 5. (page 127)
An arrow has just been shot from a bow and is now traveling
horizontally. Air resistance is not negligible. Identify the forces on
the arrow.
two forces are there Drag and weight
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Get started for freeIn lab, you propel a cart with four known forces while using an
ultrasonic motion detector to measure the cart’s acceleration. Your data are as follows:
a. How should you graph these data so as to determine the mass of the cart from the slope of the line? That is, what values
should you graph on the horizontal axis and what on the
vertical axis?
b. Is there another data point that would be reasonable to add,
even though you made no measurements? If so, what is it?
c. What is your best determination of the cart’s mass?
Figure shows the acceleration of objects of different mass that experience the same force. What is the magnitude of the force?
A baseball player is sliding into second base. Identify the forces
on the baseball player.
Exercise 19 show two of the three forces acting on an object in equilibrium. Redraw the diagram, showing all three forces. Label the third force .
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.
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