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podryga [215]
3 years ago
15

PLEASE HELP

Physics
1 answer:
enyata [817]3 years ago
8 0

Answer:

29 m/s.

Explanation:

Hope this helps.

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Compare the motions of transverse, longitudinal, and combined waves.
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How fast must a 2500-kg elephant move to have the same kinetic energy as a 67.0-kg sprinter running at 15.0 m/s
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2.45 m/s

Explanation:

kinetic energy = 1/2 * m * v^2

then, 0.5 * 2500 * x^2 = 0.5 * 67 * 15^2

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HELP ASAP!!!! Ashley and Rachel are driving bumper cars. Ashley's bumper car is moving and she collides with Rachel bumper car,
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3 years ago
When running a 100 meter race Sergio reaches his maximum speed when he is 40 meters from the starting line, and 6 seconds have e
Tanzania [10]

Answer:

13.32 m/s

39.96 m

79.96 m

59.98 m

Explanation:

s=ut+\frac{1}{2}at^2\\\Rightarrow 40=0\times 6+\frac{1}{2}\times a\times 6^2\\\Rightarrow a=\frac{40\times 2}{6^2}\\\Rightarrow a=2.22\ m/s^2

v=u+at\\\Rightarrow v=0+2.22\times 6\\\Rightarrow v=13.32\ m/s

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If Sergio runs for 3 seconds after reaching his maximum speed

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In the three second Sergio will cover 39.96 m

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So, total distance covered in 9 seconds is 40+39.96 = 79.96 m

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