Question

T1=20с v1=20м/с t2=20с v2=30м/с какова средняя скорость?

Answer 1

25 м\с ..................

Answer 2

To calculate the average velocity, we use the formula:

Average velocity (v_avg) = Total displacement / Total time

Where, Total displacement = (final position) - (initial position) Total time = (final time) - (initial time)

Given: T1 (initial time) = 20 s v1 (initial velocity) = 20 m/s T2 (final time) = 20 s v2 (final velocity) = 30 m/s

First, let's calculate the total displacement: Displacement (Δx) = v2 * t2 - v1 * t1

Δx = (30 m/s * 20 s) - (20 m/s * 20 s) Δx = 600 m - 400 m Δx = 200 m

Next, calculate the total time: Total time (Δt) = T2 - T1 Δt = 20 s - 20 s Δt = 0 s

The total time (Δt) turns out to be 0 seconds. This means the motion started and ended at the same time (T1 and T2 are the same), and hence, the average velocity is undefined.

Average velocity (v_avg) = Δx / Δt v_avg = 200 m / 0 s

Since division by 0 is undefined, there is no valid average velocity in this scenario.