Question

An ant travels from P to Q and then moves from Q to R (as shown in the diagram). Show its resultant displacement in the diagram.

CBSE Class IX Science VSA (1 Mark)

Answer 1

hi

here is your answer

you only need to draw the diagram and with a different pen join P and R.

hope it helps:)

Answer 2

Answer:

You only need to draw the diagram and with a different pen join P and R.

Explanation:

What does displacement mean?

If the object moves relative to the reference image—for example, if the professor moves to the right relative to the whiteboard or a passenger moves toward the back of the plane—the object's position will change. This change in position is known as displacement. The word displacement means that an object has moved or relocated.

What is confusing about displacement?

People often forget that the distance traveled can be greater than the amount of displacement. By size we mean the amount of displacement regardless of its direction (i.e. just a number with a unit). For example, the professor may have walked back and forth many times, perhaps walking a distance of 150 meters during a lecture, and still ended up only two meters to the right of her starting point. In this case, her displacement would be +2 m, the magnitude of her displacement would be 2 m, but the distance she traveled would be 150 m. In kinematics, we almost always deal with displacement and magnitude of displacement, and almost never with distance traveled. One way to think about it is to assume that you have marked the start of the movement and the end of the movement. Offset is simply the difference in position of two markers and is independent of the path you travel between the two markers. However, the distance traveled is the total length of the journey between the two markers.

People often forget to include the negative sign, if necessary, in their displacement answer. This sometimes happens if they accidentally subtract the end position from the start position rather than subtracting the start position from the end position.

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