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WINSTONCH [101]

3 years ago

10

A car is travelling at 15 m/s on a horizontal road and stopped after 4 s. The coefficient of kinetic friction between the tires

and road is:

1 answer:

givi [52]3 years ago

3 0

Answer:

Fr,= umg

umg= ma

a= v/t

umg= mv/t

u= v/gt= 0.38

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The Normal and Gravitational Force

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The generator at a power plant produces AC at 20,000 V. A transformer steps this up to 355,000 V for transmission over power lin

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Answer:

Number of coil in the output is 39938

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A feather, a marble, and a cannonball are dropped from the same height at

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The correct answer is that they would all hit the ground at the same time. If no air resistance is present, the rate of descent depends only on how far the object has fallen, no matter how heavy the object is. This means that two objects will reach the ground at the same time if they are dropped simultaneously from the same height. This statement follows from the law of conservation of energy and has been demonstrated experimentally by dropping a feather and a lead ball in an airless tube.

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Answer:

<em>63.44 rad/s</em>

<em></em>

Explanation:

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final velocity of bullet $v_{2}$ = 140 m/s

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==> $\frac{1}{2}*0.0033*(250^{2} - 140^{2} )$ = 70.785 J

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The angular speed will be

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