Explain Please A. Which of the following statements is correct? 1.It is possible

Question

Explain Please

A. Which of the following statements is correct?

1.It is possible for an object to have motion in the absence of forces on the object.

2.It is possible to have forces on an object in the absence of motion of the object.

3.Neither 1 nor 2 is correct.

4.Both 1 and 2 are correct.

B. An object experiences no acceleration. Which of the following cannot be true for the object?

1.A single force acts on the object.

2.No forces act on the object.

3.Forces act on the object, but the forces cancel.

C. Suppose you are talking by interplanetary telephone to a friend, who lives on the Moon. He tells you that he has just won a newton of gold in a contest. Excitedly, you tell him that you entered the Earth version of the same contest and also won a newton of gold! Who is richer?

1.You are.

2.Your friend is.

3.You are equally rich.

D. If a fly collides with the windshield of a fast-moving bus, which experiences an impact force with a larger magnitude?

1.The fly.

2.The bus.

3.The same force is experienced by both.

E. You press your physics textbook flat against a vertical wall with your hand. What is the direction of the friction force exerted by the wall on the book?

1.downward

2.upward

3.out from the wall

4.into the wall

Explanation / Answer

A. 4. Both 1 and 2 are correct.

Explaination:

For 1.

According to Newtons first law every body continues in its state of rest or state of continuous motion in straight line unless it is acted upon external unbalence force.

so if that body is already in motion by its own and no external force is acting on it then, It is possible for an object to have motion in the absence of forces on the object.

for 2.

if the body is at rest it does not mean that there is no forces acting on it, forces are there but they are canceling each other and hence body remain at rest so It is possible to have forces on an object in the absence of motion of the object.

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