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nikklg [1K]
3 years ago
12

6. What is the speed of a rocket that travels 9000 meters in 12.12 seconds?

Physics
1 answer:
kkurt [141]3 years ago
5 0

Answer:

742.57 m/s

Explanation:

Given:

Distance travels by a rocket = 9000 metres

Time taken by rocket = 12.12 seconds

Questioned asked:

Speed of rocket = ?

Solution:

By applying formula, speed = distance traveled divided by time taken

                                speed = \frac{distance}{time} \\           = \frac{9000}{12.12} \\           = 742.57m/s

Therefore, the speed of a rocket that travels 9000 meters in 12.12 seconds is 742.57 meters per seconds.

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The world record for the 100.0 meter dash is 9.580 seconds. Find the speed of the runner in miles per hour.
grigory [225]

Answer:

233.1 miles per hours

Explanation:

Speed: This is defined as the ratio of distance to time. The S.I unit of speed is m/s. speed is a vector quantity because it can only be represented by magnitude only. Mathematically, speed can be expressed as,

S = d/t ....................... Equation 1

Where S = speed of the runner, d = distance covered, t = time.

Given: d = 100 meter , t = 9.580 seconds

Conversion:

If, 1 meter =  0.00062 miles

Then, 100 meters = (0.00062×100) miles = 0.62 miles.

Also

If, 3600 s = 1 h

Then, 9.580 s = (1×9.580)/3600 = 0.00266 hours.

Substitute into equation 1

S = 0.62/0.00266

S = 233.1 miles per hours.

Hence the runner speed is 233.1 miles per hours

7 0
3 years ago
How many moles of MgCl2 are there in 315 g of the compound? mol
jeka94
315g/95gmol-1
3.315 moles of MgCl2
4 0
3 years ago
Read 2 more answers
2. For a rotating rigid body, which of the following statements is NOT correct?
AfilCa [17]

Answer:

                                                dasgfwe

Explanation:

6 0
3 years ago
The relative humidity would be ________% if the actual water vapor in the air was 4 grams per cubic meter, the air's capacity to
AveGali [126]

Answer:

50%

Explanation:

Humidity is the amount water vapor present in the atmosphere.

Relative humidity is defined as the ratio of partial water vapor present in air to the actual water vapor at a particular temperature. It is expressed in percentage and the higher the percentage RH, the more the saturated water vapor present in the atmosphere and vice versa.

It is expressed mathematically as shown;

RH = actual water vapor in air/saturated water vapor × 100%

If the actual water vapor in the air was 4 grams per cubic meter and the air's capacity to hold water vapor was 8 grams per cubic meter

Actual water vapor = 4g/cm³

Air's water capacity (saturated water vapor) = 8g/cm³

RH = 4/8×100

RH = 50%

3 0
3 years ago
Magnets attract objects made up of _______;_______and _______​
mixas84 [53]
I think metal, steel and copper.
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2 years ago
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