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Zarrin [17]
2 years ago
15

HELP PLEASE BRAINIEST IF CORRECT!!!!!!!

Physics
2 answers:
frozen [14]2 years ago
3 0

Answer:

day 3 or D

Explanation:

day one: 100>90

day two: 150>140

day three: 200=200

day four: 250>235

Vesna [10]2 years ago
3 0

Answer: Day 1

Explanation: You have to first divide each one by distance divided by time.

Day 1 - 100/90 = 1.1 repeated

Day 2 - 150/140 = 1.07 repeated

Day 3 - 209/200 = 1

Day 4 - 250/235 = 1.07 repeated

The one with the largest number is the one that took the slowest which would be Day 1.

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Proper design of automobile braking systems must account for heat buildup under heavy braking. Part A Calculate the thermal ener
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Answer:

1838216 J

Explanation:

95 km/h = 26.39 m/s

40 km/h = 11.11 m/s

Initial kinetic energy

= .5 x 1600 x(26.39)²

= 557145.67 J

Final kinetic energy

= .5 x 1600 x ( 11.11)²

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Loss of kinetic energy

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Loss of potential energy

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= 1600 x 9.8 x 340 sin 15

= 1379816 J

Sum of Loss of potential energy and Loss of kinetic energy

=  1379816 + 458400

= 1838216 J

This is the work done by the friction . So this is heat generated.

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