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Anna007 [38]
3 years ago
12

A meteor falls toward Earth's surface. Given that the acceleration due to

Mathematics
1 answer:
Vlada [557]3 years ago
7 0

Answer:147,000 J

Step-by-step explanation:

Just did on apex

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63in. 2

Step-by-step explanation:

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Find absolute max and min
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A man starts on a 290 mile trip at 10 a.m. and drives at an average speed of 40 mph until he stops for lunch. After he stops one
ozzi

Answer:

1:30pm

Step-by-step explanation:

Start Time: 10:00am

Start Speed: 40MPH

Time for Lunch: 30minutes

Arrival Time: 5:00pm

Ending Speed: 50MPH

Total Miles: 290miles

Find Total Time Taken:

5pm - 10am = 7 hours

7 hours - 30 minutes (lunch) = 6.5 hours of travel

Create Equations:

Distance = Speed x Time

Finding Total Numbers of Miles Traveled

Miles = SpeedBefore x TimeBefore + SpeedAfter x TimeAfter

290(Miles) = 40(mph) x E + 50(mph) x Y

290 = 40E + 50A

Finding Time Traveled Before and After the lunch break

Note: It is based on duration in hours

Total Time = Time Before + Time After + Lunch Time

7 hours = E + Y + .5 hours

7 = E + Y + .5

Solve for Y

7 = Y + E + .5

6.5 = Y + E

6.5 - E = Y

Use Substitution in second equation to solve for E

290 = 40E + 50Y

290 = 40E + 50(6.5 - E)

290 = 40E + (325 - 50E)

290 = 40E + 325 - 50E

290 = -10E + 325

-35 = -10E

10E = 35

E = 3.5 hours, time traveled before lunch

Note: The following is unnecessary

Solve for Y, Again

Y = 6.5 - E

Y = 6.5 - 3.5

Y = 3 hours, time traveled after lunch

So the man traveled for 3.5 hours and then ate lunch. Then he traveled for 3 more hours.

So...

10am + 3.5 hours = 1:30pm - the time when he ate lunch

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