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3 years ago

If in 30 minutes Allex runs to a store that is 4 km away, what is her average speed in km/h? km/h

Physics

2 answers:

dlinn [17]3 years ago

6 0

Im pretty sure the answer is 8km/h

grin007 [14]3 years ago

5 0

Average speed is given as the ratio of total distance traveled in a particular time interval.

t = time of travel for allex = 30 min = 30/60 hour = 0.5 hour (Since 1 hour = 60 min)

d = distance traveled in time "t" = 4 km

V = average speed of allex

Average speed is given as

V = d/t

V = 4/0.5

V = 8 km/h

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Part A)

As we know that ball is hanging from the top and its angle with the vertical is 20 degree

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Here we can use energy theorem to find the distance that it will move

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$(-(0.37)m(9.81) cos15 + m(9.81) sin15)L = - \frac{1}{2}m(1.4)^2$

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Part C)

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3 years ago

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Given parameters:

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Speed of skateboarder = ?

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learn more:

Speed brainly.com/question/1548911

#learnwithBrainly

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3 years ago

An airplane flies eastward and always accelerates at a constant rate. At one position along its path, it has a velocity of 34.5

Inessa05 [86]

Answer:

the acceleration of the airplane is 5.06 x 10⁻³ m/s²

Explanation:

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3 years ago