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4 years ago

A car travels 500m in 50s, then 1,500m in 75s. Calculate its averages speed for the whole journey

Physics

2 answers:

SIZIF [17.4K]4 years ago

8 0

Answer:

15m/s

Explanation:

500 ÷ 50 = 10m/s

1500 ÷ 75 = 20m/s

10 + 20 = 30

30 ÷ 2 = 15m/s

Gekata [30.6K]4 years ago

7 0

Answer: 16 miles per second

<u>Explanation:</u>

Find the total distance traveled and the total time.

$\text{average rate}=\dfrac{1500+500}{75+50}=\dfrac{2000\ miles}{125\ second}=\large\boxed{16\ mps}$

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vampirchik [111]

Answer:

$\large \boxed{\text{30 rev/s}}$

Explanation:

This question is based on the Law of Conservation of Angular Momentum.

Angular momentum (L) equals the moment of inertia (I) times the angular speed (ω).

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