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Nastasia [14]
3 years ago
15

Es muy común que cuando se viaja hacia un río o lago se juegue “ranita”, el cual consiste en lanzar una piedra horizontalmente h

acia adelante para que cuando ésta toque la superficie del agua haga varios “saltos” sobre el agua. Durante un juego de estos, un desocupado nota que una de las piedras que arroja se demora 0,4 s en tocar la superficie del agua y la toca a 2,5 m de la orilla del lago, desde donde fue lanzada. Encuentre:
a) La altura de la que fue lanzada la piedra.

b) La velocidad con la que fue lanzada.
Physics
1 answer:
Masteriza [31]3 years ago
5 0

I translate this, the answer is A.

la respuesta es A

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4 0
3 years ago
An automobile traveling 95 km/h overtakes a 1.30-km-long train traveling in the same direction on a track parallel to the road.
SCORPION-xisa [38]

Answer: 6.175 km

Explanation:

from the question, we have the following

velocity of the automobile = 95 km/g

velocity of the train = 75 km/h

length of the train = 1.30 km

since the automobile and the train are moving in the same direction, we need to find the velocity of the car relative to the train which will be their difference in speed = 95 - 75 = 20 km/h

we need to find the time it takes the automobile to overtake the train using the formula time = distance / speed , with the distance being the length of the train.

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= 0.065 hour

now we can find the distance traveled by the automobile using the the time taken for it to overtake the train and the speed of the automobile.

therefore, distance = speed x time

     distance = 95 x 0.065 =6.175 km

5 0
4 years ago
Sometimes a new experimental result may seem to go against a well-established scientific theory. Which statement BEST describes
MrMuchimi
The best thing to do in this case is to redo the experiment and re record the info, it has to be precise and accurate so you also have to check if your procedure is correct. If the results are both accurate and precise then you have to report your findings to the committee of that specific field. <span />
7 0
3 years ago
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p = mv

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m  =  \frac{36}{4}

m = 9kg

8 0
3 years ago
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