Question

V0=0A=20см/с^2V=7,2 км/чt-?s-?​

Answer 1

Ответ:

10с;   10 м;

Объяснение:

v₀ = 0

v₁ = 7.2 км/ч = 2 м/с

а = 20 см/с² = 0,2 м/с²

t₁ - ?

s₁ - ?

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v₁ = v₀ + at₁

s₁ = v₀t₁ + 0.5at₁²

v₀ = 0

t₁ = v₁ : a = 2 : 0.2 = 10 (c)

s₁ = 0.5at₁²

s₁ = 0.5· 0.2 · 10² = 10 (м)

Answer 2

It looks like you've provided some initial information about velocity and acceleration, and you're looking to find the time (t) when the velocity reaches a certain value. Let's solve the problem step by step:

Given: Initial velocity, V0 = 0 m/s Acceleration, A = 20 cm/s² (convert to m/s²: 20 cm/s² = 0.2 m/s²) Final velocity, V = 7.2 km/h (convert to m/s: 7.2 km/h = 2 m/s)

We can use the kinematic equation that relates initial velocity, final velocity, acceleration, and time:

V = V0 + A * t

Plug in the values: 2 m/s = 0 m/s + 0.2 m/s² * t

Now, solve for t: t = (2 m/s) / (0.2 m/s²) t = 10 s

So, it would take 10 seconds for the velocity to increase from 0 m/s to 2 m/s with an acceleration of 0.2 m/s².