Chapter 5: Q. 12 (page 127)
Newton’s second law says . So is role="math" localid="1650733973680" a force? Explain.
Short Answer
No, But it is called the superposition force.
Chapter 5: Q. 12 (page 127)
Newton’s second law says . So is role="math" localid="1650733973680" a force? Explain.
No, But it is called the superposition force.
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You toss a ball straight up in the air. Immediately after you let go of it, what force or forces are acting on the ball? For each force you name,
(a) state whether it is a contact force or a long-range force and
(b) identify the agent of the force.
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 .

Exercises 20 show a free-body diagram. For each, write a short description of a real object for which this would be the correct free-body diagram. Use Examples 5.4, 5.5, and 5.6 as examples of what a description should be like.

FIGURE Q5.15 shows a hollow tube forming three-quarters of a circle. It is lying flat on a table. A ball is shot through the tube at high speed. As the ball emerges from the other end, does it follow path A, path B, or path C ? Explain.

If a force is exerted on an object, is it possible for that object to be moving with constant velocity? Explain.
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