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mixer [17]
3 years ago
13

A motorcycle traveling south reaches a speed of 38.0 m/s. It then begins uniform negative acceleration and comes to rest after 7

.359s. How far did the motorcycle travel in this time?
Physics
1 answer:
Aleonysh [2.5K]3 years ago
6 0

Answer: 30.641

Explanation: If you get the ave which is 38.0 then the vi which is 7.359

38.0-7.359=30.641/0.0 which is 30.641

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A ball is thrown upward with a speed of 40 m/s. Approximately how much time does it take the ball to travel from the release loc
zvonat [6]

I'm going to assume that this gripping drama takes place on planet Earth, where the acceleration of gravity is 9.8 m/s².  The solutions would be completely different if the same scenario were to play out in other places.

A ball is thrown upward with a speed of 40 m/s.  Gravity decreases its upward speed (increases its downward speed) by 9.8 m/s every second.

So, the ball reaches its highest point after (40 m/s)/(9.8 m/s²) = <em>4.08 seconds</em>. At that point, it runs out of upward gas, and begins falling.

Just like so many other aspects of life, the downward fall is an exact "mirror image" of the upward trip.  After another 4.08 seconds, the ball has returned to the height of the hand which flung it.  In total, the ball is in the air for <em>8.16 seconds</em> up and down.

4 0
3 years ago
In a certain city, electricity costs $0.20 per kw·h. what is the annual cost for electricity to power a lamp-post for 8.00 hours
UNO [17]

Part a)

per day electricity power consumed when 100 W bulb is used for 8 hours

P = 8 * 100 = 800 Wh

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E = 365 * 800 = 292 kWH

now the cost will be given

cost = 0.20 * 292 = $ 58.4

now when other energy efficient light is used

P = 8 * 25 = 200 Wh

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E = 365 * 200 = 73 kWH

now the cost will be given

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8 0
3 years ago
Through which material would you expect sound waves to move fastest? O A. Iron O B. Water O c. Air O D. Milk​
Alexxx [7]

Answer:

Solids

Is this what your looking for, It might tell you the answer?

8 0
3 years ago
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An enconomy car has a mass of 800 kg. What is the weight of the car?
Maksim231197 [3]

Answer:

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Explanation:

Easy converting.

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Explain Sound level intensity with mathematical steps?
yan [13]

Answer:

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2 years ago
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