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nikdorinn [45]
3 years ago
6

You are on a hike in the mountains. You have 3.79 km left to go before your next campsite. The sun will set in 6.93 h. What aver

age speed must you walk to get to camp at sunset? Answer in units of km/h
Physics
1 answer:
Nadya [2.5K]3 years ago
7 0
The average speed is equal to the total distance covered in a specific interval of time. Since we are given with the information on distance and time, all we have to do is divide them.

Average speed = 3.79 km/6.93 h = 0.547 km/h

Hence, you should not have a speed less than 0.547 km/h if you want to catch the sunset.
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A light beam which is amplified into a strong concetrated beam of light is known as A) a laser. B) a transistor. C) a microwave
murzikaleks [220]

The correct answer is A. a <em>Laser</em>.

4 0
3 years ago
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Find the acceleration of a car that can go from rest to 50 km/h in 13 s
ziro4ka [17]

The acceleration of the car is 1.067 m/s^{2}.

<u>Explanation:</u>

Acceleration is the measure of change in velocity experienced by any object for a given time period. So it is determined as the ratio of difference in the velocity to the time period.

As here the initial velocity is stated as zero, so u = 0. And the final velocity is termed as 50 km/h. Then we have to determine the acceleration in 13 s. So here we have to convert the units as common units. Thus, 50 km/h should be converted to m/s as \frac{50*1000}{3600}=13.88 m/s

So now, the initial velocity u = 0 and final velocity v = 13.88 m/s and the time period is given as t = 13 s.

Acceleration = \frac{v-u}{t}=\frac{13.88-0}{13}=1.067 m/s^{2}

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8 0
3 years ago
the expression like a ton of bricks means very hard would being hit by an actual ton of brick ls hurt?
Olegator [25]

Answer:

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Explanation:

8 0
4 years ago
At the surface of Jupiter's moon Io, the acceleration due to gravity is 1.81m/s2 . A watermelon has a weight of 58.0N at the sur
kvasek [131]

Answer: A) mass on earth surface = 5.91kg

B) mass on surface of jupiter = 5.91kg

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The relationship between weight (W), mass (m) and acceleration due gravity (g) is given below

W=mg

From the question, g= 9.8m/s² and weight on the surface on the earth is 58N

A) The mass of watermelon on earth is

m = 58/ 9.8 = 5.91kg

B) the mass of the watermelon on jupiter is 5.91kg.

You will notice this is the same as the mass of watermelon on earth and that is so because mass is a scalar quantity that does not depends on the distance away from the center of the earth (unlike weight which is a vector) thus making it constant all through any location.

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W = mg

W = 5.91 x 9.8

= 10.697N.

6 0
3 years ago
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NNADVOKAT [17]

Answer:

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