Question

3.0 In s a particle goes from point A to point B , moving in a semicircle of radius 3m .finds) the average speed b)magnitude of the average velocity i brainly .in

Answer 1

Answer:

for the first part the answer will be π m/sec

and for the second part the answer will be 2 m/sec

Explanation:

we know that average acceleration is total distance covered upon total time taken.

here total distance travelled =

$(2\pi \times r) \div 2 = \pi \times r$

here r = 3m therefore π × r = 3π

total time taken = 3 sec (given)

therefore average speed = 3π/3 = π

answer of 1st part is π m/sec

we know that average velocity = total displacement upon total time taken

here total displacement = diameter of the semicircle = 2×3 = 6

total time taken = 3sec

therefore average velocity = 6/3 =2 m/sec