PHYSICS MIDDLE SCHOOL

Ladybug walks 10 cm forward and 5 cm backwards in 20 seconds what is the average speed of ladybug what is the average velocity

Answers

Answer 1
Answer:

Answer:

Average speed = 0.0075 m/s

Average velocity = 0.0025 m/s along forward direction

Explanation:

Speed is the ratio of distance and time and velocity is the ratio of displacement and time.

Distance traveled = 10 + 5 = 15 cm = 0.15 m

Displacement = 10 - 5 = 5 cm = 0.05 m

Time = 20 seconds

\texttt{Average speed = }\frac{\texttt{Distance}}{\texttt{Time}}\n\n\texttt{Average speed = }(0.15)/(20)=7.5* 10^(-3)m/s\n\n\texttt{Average velocity = }\frac{\texttt{Displacement}}{\texttt{Time}}\n\n\texttt{Average velocity = }(0.05)/(20)=2.5* 10^(-3)m/s

Average speed = 0.0075 m/s

Average velocity = 0.0025 m/s along forward direction
Answer 2
Answer:

Hey!

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Formula: Distance / Time = Speed

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Solution:

Speed = 15/20 = 0.75cm/sec

Velocity = 5/20 = 0.25cm/sec

10 + 5 = 15 (distance traveled)

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Answer:

Speed = 0.75cm/sec

Velocity = 0.25cm/sec going forward.

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Hope This Helped! Good Luck!

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Answers

Answer:

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Answers

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A strand of 10 lights is plugged into an outlet. How can you determine if the lights are connected in series or parallel? A) Unscrew one light. If the other lights stay on, it's a series circuit. B) Unplug the strand. If the first light stays on, it's a series circuit. C) Unscrew one light. If the other lights turn off, it's a series circuit. D) Cut the strand in half. If the plugged in half stays on, it's a series circuit

Answers

Answer: C) Unscrew one light. If the other lights turn off, it's a series circuit.

Explanation:

In a series circuit, all the components in the same path. The current in the entire circuit is same. The voltage drop across each component is different. If one component does not work, the entire circuit breaks and other components also stop working. On the other hand, in a parallel circuit, voltage drop across all the components is equal. Trouble in one component does not effect other components.

Hence, to check whether the lights are connected in series or in parallel, one light should be unplugged and if the other lights still work, it means they are connected in parallel otherwise in series. Thus, correct option is C) Unscrew one light. If the other lights turn off, it's a series circuit.
this answer is c because a series series circuit only has one path unlike a parallel circuit which has multiple circuits. 

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Answers

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Answers

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