During the first half of the time, the body moves at a speed, the modulus of which is V1 = 6.0m / s, at an angle a1 = 45

During the first half of the time, the body moves at a speed, the modulus of which is V1 = 6.0m / s, at an angle a1 = 45 to the Ox axis, and the second half of the time, at an angle a2 = 135 to the OX axis with a speed whose modulus is V2 = 9.0m / s … Average speed modulus is … m / s

Decision:
1) Find the square of the speed by the formula:
V ^ 2 = v1 ^ 2 + v2 ^ 2
By hypothesis, v1 = 6 and v2 = 9. Substitute these values.
v ^ 2 = 6 ^ 2 + 9 ^ 2 = 36 + 81 = 117
Find the root of v
v = √117
v = 10.8 m / s
Answer: 10.8