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andrew-mc [135]
3 years ago
15

The proper way to brake in an emergency situation with non-ABS brakes is to: (A) apply threshold braking (B) “pump” the brakes

Physics
1 answer:
Makovka662 [10]3 years ago
5 0

Answer:

C. Lock the brakes is the answer

B. Pump the brakes

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Answer:

the can's kinetic energy is 0.42 J

Explanation:

given information:

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diameter, d = 6 cm, so r = d/2 = 6/2 = 3 cm = 0.03 m

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the kinetic energy of the can is the total of kinetic energy of the translation and rotational.

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I = \frac{1}{2} mr^{2} and ω = \frac{v}{r}

thus,

KE = \frac{1}{2} \frac{1}{2} mr^{2} (\frac{v}{r})^2 + \frac{1}{2} mv^{2}

     = \frac{1}{2} \frac{1}{2} mr^{2} \frac{v^{2} }{r^{2}} + \frac{1}{2} mv^{2}

     = \frac{1}{4} mv^{2} + \frac{1}{2} mv^{2}

     = \frac{3}{4} mv^{2}

     = \frac{3}{4} (0.46) (1.1)^{2}

     = 0.42 J

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