C) Explain the following.<br>Keftles, cooking pans and iron boxes have polished surfaces

A crazy dog runs at a constant speed of 19.85 mi/hr for 6.09 min. How far does the dog travel during this time period?

Phantasy [73]

Answer:

Distance, d = 3242.19 meters

Explanation:

It is given that,

Speed of the dog, v = 19.85 mi/hr

Since, 1 mph = 0.44704 m/s

v = 19.85 mi/hr = 8.873 m/s

Time taken by the dog, t = 6.09 min = 365.4 sec

Let the distance covered by the dog during this time period is d. It can be calculated by the speed of the dog multiplied by the time taken as :

$d=v\times t$

$d=8.873\times 365.4$

d = 3242.19 meters

So, the the dog travel during this time period is 3242.19 meters. Hence, this is the required solution.

8 0

3 years ago

What two things must a measurement include?

astraxan [27]

The number and units. An example would be 3cm or 4kg.

7 0

3 years ago

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The _____ of an object consists of its speed and direction.

ELEN [110]

Velocity would be an answer

3 0

3 years ago

You can mow an average of 1400 square meters each hour. How many minutes will it take you to mow a lawn with an area of 320000 s

Ksivusya [100]

Answer:

time required to mow lawn is 1274.06 minutes

Explanation:

given data

average mow = 1400 square meters each hour

area = 320000 square feet

to find out

How many minutes will take to mow lawn

solution

we know that here 1 square feet is equal to 0.092903 square meter

so 320000 square feet will be = 0.09203 × 320000 = 29728.9728 square meter

so time required is express as

time required = $\frac{distance}{speed}$

time required = $\frac{29728.9728}{1400}$

time required = 21.23 hours

so time required = 21.23 × 60 min = 1274.06

time required to mow lawn is 1274.06 minutes

7 0

3 years ago

Meteorite On October 9, 1992, a 27-pound meteorite struck a car in Peekskill, NY, creating a dent about 22 cm deep. If the initi

Rom4ik [11]

Answer:

8427375 N

Explanation:

From newton's equation of motion,

F = ma................. Equation 1

Where F = average force exerted on the meteorite by the car, m = mass of the meteorite, a = acceleration.

We can find the value of acceleration from newton's equation of motion

using,

v² = u²+2as.................. Equation 2

Where v = final velocity, u = initial velocity, a = acceleration, s = distance.

Make a the subject of the equation

a = (v²-u²)/2s............... Equation 3

Note: When the meteorite struck the car, it was brought to rest

Given: u = 550 m/s, v = 0 m/s ( brought to rest), s = 22 cm = 0.22 m

Substitute into equation 3

a = (0²-550²)/(2×0.22)

a = -302500/0.44

a = -687500 m/s²

Also given: m = 27 pound = (27×0.454) = 12.258 kg

Substitute into equation 1

F = 12.258(-687500)

F = -8427375 N

Note: The negative sign tells that the force act in opposite direction to the motion of the meteorite

8 0

4 years ago

Read 2 more answers

C) Explain the following.Keftles, cooking pans and iron boxes have polished surfaces​

C) Explain the following.Keftles, cooking pans and iron boxes have polished surfaces