Question

a particle completes half a round of a circular path of radius 28 cm. what is the distance traveled and displacement of this particle ?​

Answer 1

Answer:

Distance travelled = 88 cm

Displacement = 56 cm

Explanation:

To calculate for the distance travelled, you must find the circumference of half of the circle. This is because the particle completes HALF a round of a circular path, so we'll be using this formula:

Circumference = Radius × π

We don't use diameter here because the question states that it only travelled half a round of a CIRCULAR PATH. So next, we'll be plugging in the values and find the circumference.

Circumference = 28 cm × 22/7

Circumference = 88 cm

The displacement can be found by finding the distance between the starting point and then end point. Since it is a circular path, we can find the distance between the 2 points by calculating for the diameter of the circle. The diameter of the circle is 2 times the radius, so:

Diameter = 2 × 28 cm

Diameter = 56 cm