39. Which of the following situations applies the third law of motion?

A. A rocket taking off from earth which pushes gases in one direction and the rocket in the other.
B. A rocket sitting on the ground preparing for take --off but it needs an outside force to overcome its inertia of a non-moving object
C. A rocket that is accelerating through space and exerts a great amount of force because its mass and acceleration is so large.
D. Both b and c

40. Among the conditions below, which is the example of Newton's second law of motion?

A. A rocket taking off from earth which pushes gases in one direction and the rocket in the other.
B. A rocket sitting on the ground preparing for take-off but it needs an outside force to overcome its inertia of a non-moving object
C. A rocket that is accelerating through space and exerts a great amount of force because its mass and acceleration is so large.
D. Both B and C

41. What will happen to the potential energy of an object when raised from the ground?

A. decreases
C. remains the same
B. increases
D. becomes zero

42. The diagram shows a signal generator connected to two loudspeakers emitting the same note. A person walks slowly along the line AB. What will the person notice?

A. kinetic energy
B. loudness of sound
C. movement of particles
D. sound effect

The Newton's three laws of motion are Law of Dormancy, Law of Mass and Speed increase, and the Third Law of Motion. A body very still endures in its condition of rest, and a body in motion stays in steady motion along a straight line except if followed up on by an outside power. In the main law, an item won't change its motion except if a power follows up on it. In the subsequent law, the power on an article is equivalent to its mass occasions its speed increase. In the third law, when two items communicate, they apply powers to one another of equivalent size and inverse course.

The focal point of Example 1 is Newton's first law of motion - here and there alluded to as the law of dormancy. Newton's first law of motion is often expressed as. An article very still stays very still and an item in motion stays in motion with a similar speed and a similar way except if followed up on by an unequal power. Newton's first law of motion expresses that a body very still will stay very still position just and a body which is in motion keeps on being in motion except if in any case they are followed up on by an outside power. At the point when an article is in motion the speed won't be equivalent to zero yet the speed increase will be equivalent to nothing.

what is newton's laws of motion:

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