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Nana76 [90]
3 years ago
13

A salt march harvest mouse ran a 360 cm straight course race in 9 seconds. How fast did it learn

Mathematics
2 answers:
Makovka662 [10]3 years ago
6 0

Answer: 40c m/s  

Solution:  

Mouse ran 360 cm straight course race in 9 seconds.  

We need to find the rate or speed of mouse  

We know the speed formula is distance covered by given time.  

Speed=\frac{Distance}{Time}  

Where,  

Distance = 360 cm  

Time = 9 seconds  

\therefore   speed =\frac{360}{9}

Speed=40 cm/s  

Mouse ran with speed 40 cm/s


artcher [175]3 years ago
3 0

Distance covered by by the harvest mouse= 360 cm

Or distance covered by by the harvest mouse= 360 /100= 3.60 m

Time taken to cover the above distance= 9 s

We know,

Speed= distance covered/time taken to cover that distance

Speed= 3.60/9= 0.4 m/s

Therefore, the mouse ran 0.4 m/s fast.


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George walks 1 mile to school. He leaves home at the same time each day, walks at a steady speed of 3 miles per hour, and arrive
alex41 [277]

Answer:

George must run the last half mile at a speed of 6 miles per hour in order to arrive at school just as school begins today

Step-by-step explanation:

Here, we are interested in calculating the number of hours George must walk to arrive at school the normal time he arrives given that his speed is different from what it used to be.

Let’s first start at looking at how many hours he take per day on a normal day, all things being equal.

Mathematically;

time = distance/speed

He walks 1 mile at 3 miles per hour.

Thus, the total amount of time he spend each normal day would be;

time = 1/3 hour or 20 minutes

Now, let’s look at his split journey today. What we know is that by adding the times taken for each side of the journey, he would arrive at the school the normal time he arrives given that he left home at the time he used to.

Let the unknown speed be x miles/hour

Mathematically;

We shall be using the formula for time by dividing the distance by the speed

1/3 = 1/2/(2) + 1/2/x

1/3 = 1/4 + 1/2x

1/2x = 1/3 - 1/4

1/2x = (4-3)/12

1/2x = 1/12

2x = 12

x = 12/2

x = 6 miles per hour

4 0
3 years ago
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Answer:

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Step-by-step explanation:

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Answer:

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EXPLANATION:

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2 years ago
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shusha [124]

Step-by-step explanation:

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3 years ago
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