2 years ago

Which is an example of negative acceleration?

Physics

2 answers:

pshichka [43]2 years ago

7 0

Answer:

A) a snowboarder who increases speed when traveling downhill

just olya [345]2 years ago

4 0

It’s A!!!!!!!!!!!!!!!!!!!

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What is the average speed of an object that travels 6 meters in 2 seconds and then travels 3 meters in 1 second?

olya-2409 [2.1K]

Answer:

3 m/s

Explanation:

Average Speed = $\frac{Total Distance}{Total time}$

Plug in the numbers, it will be (6m + 3m) divided by (2s + 1s), which is 9m/3s, which equals to 3m/s.

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2 years ago

What does "doing work" mean when it comes to physics?

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2 years ago

work done as mass 1 moves to mass 2. the gravitational force between two point masses separated by a distance r is proportional

pav-90 [236]

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2 years ago

A car speeding down the highway honks its horn, which has a frequency 392 Hz, but a resting bystander hears the frequency 440 Hz

Natali [406]

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37.42 m/s

Explanation:

We know that apparent frequency, $\bar f$ is given by

$\bar f=f\frac {V}{V-V_s}$ where f is the given frequency in this case 392, V is the speed of sound in air which is given as 343 and $V_s$ is the speed of car which is unknown, \bar f is given as 440 Hz

$440=392\times \frac {343}{343-V_s}\\343-V_s=392\times \frac {343}{440}=305.5818182\\V_s=343-305.5818182=37.41818182\approx 37.42 m/s$

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2 years ago

Mercury’s natural state is where the atoms are close to each other but are still free to pass by each other. In which state(s) c

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Answer:

Mercury's natural state is where the atoms are close to each other but are still free to pass by each other. In which state(s) could mercury naturally exist?

Liquid is the answer

Explanation:

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2 years ago