Question

Please give me answers ​

Answer 1

Answer:

1) Body travels 15m Firstly.

Then moves 20m.

= 15+20

= 35m.

2) Radius of circle = r

Total distance covered = πr²

= 3.14×r×r

= 3.14×2r

= 2r = 3.14

= r = 3.14/2

= r = 1.57

(ii) Half circle = πr

= 3.14×1.57

= r = 4.92

(iii) Full circle = 2πr

= 2×3.14×1.57

= 2×4.92

= 9.85

3) Speed = Distance/Time

(I) Speed = 16/4

= 4m/s

(ii) Speed = 16/2

= 8m/s

Total speed = 4+8

= 12s

I hope it is helpful.