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alex41 [277]
2 years ago
14

Maria drove 100 miles in 2 hrs. what was marias speed?​

Physics
2 answers:
puteri [66]2 years ago
8 0
50 miles per hour was Maria’s speed
Kryger [21]2 years ago
4 0

speed = distance / time

= 1 miles = 1069.344 m.

100 miles = 1069.344×100

= 106,934.4 / 2 hrs.

= 53,467.2m speed

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Many Amtrak trains can travel at a top speed of 42.0 m/s. Assuming a train maintains that speed for several hours, how many kilo
777dan777 [17]

Answer:

605 km

Explanation:

Hello

the same units of measure should be used, then

Step 1

convert  42 m/s ⇒   km/h

1 km =1000 m

1 h = 36000 sec

42 \frac{m}{s}*\frac{1\ km}{1000\ m}=0.042\ \frac{km}{s}\\ 0.042\ \frac{km}{s}\\

0.042\ \frac{km}{s}*\frac{3600\ s}{1\ h} =151.2 \frac{km}{h}\\ \\Velocity =151.2\ \frac{km}{h}

Step 2

find kilometers traveled after 4  hours

V=\frac{s}{t}\\ \\

V,velocity

s, distance traveled

t. time

now, isolating s

V=\frac{s}{t} \\s=V * t\\

and replacing

s=V * t\\s=151.2\frac{km}{h}*4 hours\\ s=604.8 km\\

S=604.8 Km

Have a great day

4 0
3 years ago
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Answer:

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Explanation:

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The fastest man alive can run the 100 meter dash in 9.58 seconds, calculate average speed in meters per second
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Answer:

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What is the law of conservationl​
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