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2 years ago

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Physics

1 answer:

TEA [102]2 years ago

8 0

Answer:

1) x_total = 2.7 km=2700 m, 2) t_total = 1926 s, 3) v_avg = 1.40 m / s

Explanation:

1) To solve this uniform velocity problem, we must find the displacement of each part and add them.

x_total = x₁ + x₂

x_total = 0.7 + 2.0

x_total = 2.7 km

2) how long does it take for this tour

truck

v = x₁ / t₁

t₁ = x₁ / v

t₁ = 0.7 / 20

t₁ = 0.035 h

Let's reduce the time to the SI system

t₁ = 0.035 h (3600 s / 1h) = 126 s

when he is walking

t₂ = 30 min (60 s / 1min) = 1800 s

the total time is

t_total = t₁ + t₂

t_total = 126 + 1800

t_total = 1926 s

3) the average velocity is defined as the displacement in the inerval between time

v_avg = x_total / t_total

v_avg = 2700/1926

v_avg = 1.40 m / s

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