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coldgirl [10]
1 year ago
14

PLEASE HELP ASAPP!!!

Physics
1 answer:
Sati [7]1 year ago
7 0

Answer:

hello

Explanation:

for average speed the total distance is important so.

and you must convert min to hour 15 min is 1/4 or 0.25 hour

s =  \frac{x}{t}  =  \frac{12}{0.25}  = 48 \frac{km}{h}

for average velocity the straight line distance is important so

v =  \frac{d}{t}  =  \frac{8}{0.25}  = 32 \frac{km}{h}

hope you understand

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Hope it helped.

Edit to show calculations:

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Explanation:

A piece of driftwood moves up and down as water waves pass beneath it. However, it does not move toward the shore with the waves. What does this demonstrate about the propagation of waves through a medium?

A) Waves transmit energy but not matter as they progress through a medium.

B) Waves transmit matter but not energy as they progress through a medium.

C) Waves do not transmit matter or energy as they progress through a medium.

D) Waves transmit energy as well as matter as they progress through a medium.

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